summing long int, C (gcc)

summing long int

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//gcc 7.4.0

#include  <stdio.h>
#include <stdbool.h>

unsigned int v30sns          = 0;          // used in ADC for sensing battery volt
unsigned int v30sns_lowest   = 4095;       // used in ADC for sensing battery volt
unsigned int v30sns_highest  = 0;          // used in ADC for sensing battery volt
unsigned int v30sns_mean     = 0;          // used in ADC for sensing battery volt
unsigned long v30sns_sum     = 0;          // used in ADC for sensing battery volt
unsigned int v30sns_count    = 0;          // used in ADC for sensing battery volt
bool         v30sns_ready    = false;      // used in ADC for sensing battery volt

extern unsigned int adc(void);

int main(void)
{
    unsigned int i = 0;
    
    printf("Hello, world!\n");
    
    
    for(i=0; i <=254; i = i + 1)
    {
        adc();
    
        if ( v30sns <= v30sns_lowest )   { v30sns_lowest = v30sns; }
        if ( v30sns >= v30sns_highest )  { v30sns_highest = v30sns; }
    
        printf(" lowest: %i v30sns: %i     highest: %i      count %i      sum %i      mean %i \r\n",
              v30sns_lowest,    v30sns, v30sns_highest, v30sns_count, v30sns_sum, v30sns_mean );
        
  
    }
    
    
    
    return 0;
} // end main()

unsigned int adc(void)
{
    unsigned int data = 0;

// Read the ADC conversion result
    ((unsigned char *) &data)[0] = 0x6A;
    ((unsigned char *) &data)[1] = 0x0E;

// sum data for averaging final result
    v30sns_sum   = v30sns_sum + (unsigned long) data;
    v30sns_count = v30sns_count + 1;

// average sum after a few convertions and update global variable
    if ( v30sns_count >= 254)
    {
        v30sns = v30sns_sum / v30sns_count;
        v30sns_count = 0;
        v30sns_ready = 1;
    }

return 0;
    // v30sns = data;
}

Show compiler warnings [ + ] Compiler args [ + ] Show input
Compilation time: 0.12 sec, absolute running time: 0.19 sec, cpu time: 0.02 sec, memory peak: 5 Mb, absolute service time: 0,56 sec

Hello, world! lowest: 0 v30sns: 0 highest: 0 count 1 sum 3690 mean 0 lowest: 0 v30sns: 0 highest: 0 count 2 sum 7380 mean 0 lowest: 0 v30sns: 0 highest: 0 count 3 sum 11070 mean 0 lowest: 0 v30sns: 0 highest: 0 count 4 sum 14760 mean 0 lowest: 0 v30sns: 0 highest: 0 count 5 sum 18450 mean 0 lowest: 0 v30sns: 0 highest: 0 count 6 sum 22140 mean 0 lowest: 0 v30sns: 0 highest: 0 count 7 sum 25830 mean 0 lowest: 0 v30sns: 0 highest: 0 count 8 sum 29520 mean 0 lowest: 0 v30sns: 0 highest: 0 count 9 sum 33210 mean 0 lowest: 0 v30sns: 0 highest: 0 count 10 sum 36900 mean 0 lowest: 0 v30sns: 0 highest: 0 count 11 sum 40590 mean 0 lowest: 0 v30sns: 0 highest: 0 count 12 sum 44280 mean 0 lowest: 0 v30sns: 0 highest: 0 count 13 sum 47970 mean 0 lowest: 0 v30sns: 0 highest: 0 count 14 sum 51660 mean 0 lowest: 0 v30sns: 0 highest: 0 count 15 sum 55350 mean 0 lowest: 0 v30sns: 0 highest: 0 count 16 sum 59040 mean 0 lowest: 0 v30sns: 0 highest: 0 count 17 sum 62730 mean 0 lowest: 0 v30sns: 0 highest: 0 count 18 sum 66420 mean 0 lowest: 0 v30sns: 0 highest: 0 count 19 sum 70110 mean 0 lowest: 0 v30sns: 0 highest: 0 count 20 sum 73800 mean 0 lowest: 0 v30sns: 0 highest: 0 count 21 sum 77490 mean 0 lowest: 0 v30sns: 0 highest: 0 count 22 sum 81180 mean 0 lowest: 0 v30sns: 0 highest: 0 count 23 sum 84870 mean 0 lowest: 0 v30sns: 0 highest: 0 count 24 sum 88560 mean 0 lowest: 0 v30sns: 0 highest: 0 count 25 sum 92250 mean 0 lowest: 0 v30sns: 0 highest: 0 count 26 sum 95940 mean 0 lowest: 0 v30sns: 0 highest: 0 count 27 sum 99630 mean 0 lowest: 0 v30sns: 0 highest: 0 count 28 sum 103320 mean 0 lowest: 0 v30sns: 0 highest: 0 count 29 sum 107010 mean 0 lowest: 0 v30sns: 0 highest: 0 count 30 sum 110700 mean 0 lowest: 0 v30sns: 0 highest: 0 count 31 sum 114390 mean 0 lowest: 0 v30sns: 0 highest: 0 count 32 sum 118080 mean 0 lowest: 0 v30sns: 0 highest: 0 count 33 sum 121770 mean 0 lowest: 0 v30sns: 0 highest: 0 count 34 sum 125460 mean 0 lowest: 0 v30sns: 0 highest: 0 count 35 sum 129150 mean 0 lowest: 0 v30sns: 0 highest: 0 count 36 sum 132840 mean 0 lowest: 0 v30sns: 0 highest: 0 count 37 sum 136530 mean 0 lowest: 0 v30sns: 0 highest: 0 count 38 sum 140220 mean 0 lowest: 0 v30sns: 0 highest: 0 count 39 sum 143910 mean 0 lowest: 0 v30sns: 0 highest: 0 count 40 sum 147600 mean 0 lowest: 0 v30sns: 0 highest: 0 count 41 sum 151290 mean 0 lowest: 0 v30sns: 0 highest: 0 count 42 sum 154980 mean 0 lowest: 0 v30sns: 0 highest: 0 count 43 sum 158670 mean 0 lowest: 0 v30sns: 0 highest: 0 count 44 sum 162360 mean 0 lowest: 0 v30sns: 0 highest: 0 count 45 sum 166050 mean 0 lowest: 0 v30sns: 0 highest: 0 count 46 sum 169740 mean 0 lowest: 0 v30sns: 0 highest: 0 count 47 sum 173430 mean 0 lowest: 0 v30sns: 0 highest: 0 count 48 sum 177120 mean 0 lowest: 0 v30sns: 0 highest: 0 count 49 sum 180810 mean 0 lowest: 0 v30sns: 0 highest: 0 count 50 sum 184500 mean 0 lowest: 0 v30sns: 0 highest: 0 count 51 sum 188190 mean 0 lowest: 0 v30sns: 0 highest: 0 count 52 sum 191880 mean 0 lowest: 0 v30sns: 0 highest: 0 count 53 sum 195570 mean 0 lowest: 0 v30sns: 0 highest: 0 count 54 sum 199260 mean 0 lowest: 0 v30sns: 0 highest: 0 count 55 sum 202950 mean 0 lowest: 0 v30sns: 0 highest: 0 count 56 sum 206640 mean 0 lowest: 0 v30sns: 0 highest: 0 count 57 sum 210330 mean 0 lowest: 0 v30sns: 0 highest: 0 count 58 sum 214020 mean 0 lowest: 0 v30sns: 0 highest: 0 count 59 sum 217710 mean 0 lowest: 0 v30sns: 0 highest: 0 count 60 sum 221400 mean 0 lowest: 0 v30sns: 0 highest: 0 count 61 sum 225090 mean 0 lowest: 0 v30sns: 0 highest: 0 count 62 sum 228780 mean 0 lowest: 0 v30sns: 0 highest: 0 count 63 sum 232470 mean 0 lowest: 0 v30sns: 0 highest: 0 count 64 sum 236160 mean 0 lowest: 0 v30sns: 0 highest: 0 count 65 sum 239850 mean 0 lowest: 0 v30sns: 0 highest: 0 count 66 sum 243540 mean 0 lowest: 0 v30sns: 0 highest: 0 count 67 sum 247230 mean 0 lowest: 0 v30sns: 0 highest: 0 count 68 sum 250920 mean 0 lowest: 0 v30sns: 0 highest: 0 count 69 sum 254610 mean 0 lowest: 0 v30sns: 0 highest: 0 count 70 sum 258300 mean 0 lowest: 0 v30sns: 0 highest: 0 count 71 sum 261990 mean 0 lowest: 0 v30sns: 0 highest: 0 count 72 sum 265680 mean 0 lowest: 0 v30sns: 0 highest: 0 count 73 sum 269370 mean 0 lowest: 0 v30sns: 0 highest: 0 count 74 sum 273060 mean 0 lowest: 0 v30sns: 0 highest: 0 count 75 sum 276750 mean 0 lowest: 0 v30sns: 0 highest: 0 count 76 sum 280440 mean 0 lowest: 0 v30sns: 0 highest: 0 count 77 sum 284130 mean 0 lowest: 0 v30sns: 0 highest: 0 count 78 sum 287820 mean 0 lowest: 0 v30sns: 0 highest: 0 count 79 sum 291510 mean 0 lowest: 0 v30sns: 0 highest: 0 count 80 sum 295200 mean 0 lowest: 0 v30sns: 0 highest: 0 count 81 sum 298890 mean 0 lowest: 0 v30sns: 0 highest: 0 count 82 sum 302580 mean 0 lowest: 0 v30sns: 0 highest: 0 count 83 sum 306270 mean 0 lowest: 0 v30sns: 0 highest: 0 count 84 sum 309960 mean 0 lowest: 0 v30sns: 0 highest: 0 count 85 sum 313650 mean 0 lowest: 0 v30sns: 0 highest: 0 count 86 sum 317340 mean 0 lowest: 0 v30sns: 0 highest: 0 count 87 sum 321030 mean 0 lowest: 0 v30sns: 0 highest: 0 count 88 sum 324720 mean 0 lowest: 0 v30sns: 0 highest: 0 count 89 sum 328410 mean 0 lowest: 0 v30sns: 0 highest: 0 count 90 sum 332100 mean 0 lowest: 0 v30sns: 0 highest: 0 count 91 sum 335790 mean 0 lowest: 0 v30sns: 0 highest: 0 count 92 sum 339480 mean 0 lowest: 0 v30sns: 0 highest: 0 count 93 sum 343170 mean 0 lowest: 0 v30sns: 0 highest: 0 count 94 sum 346860 mean 0 lowest: 0 v30sns: 0 highest: 0 count 95 sum 350550 mean 0 lowest: 0 v30sns: 0 highest: 0 count 96 sum 354240 mean 0 lowest: 0 v30sns: 0 highest: 0 count 97 sum 357930 mean 0 lowest: 0 v30sns: 0 highest: 0 count 98 sum 361620 mean 0 lowest: 0 v30sns: 0 highest: 0 count 99 sum 365310 mean 0 lowest: 0 v30sns: 0 highest: 0 count 100 sum 369000 mean 0 lowest: 0 v30sns: 0 highest: 0 count 101 sum 372690 mean 0 lowest: 0 v30sns: 0 highest: 0 count 102 sum 376380 mean 0 lowest: 0 v30sns: 0 highest: 0 count 103 sum 380070 mean 0 lowest: 0 v30sns: 0 highest: 0 count 104 sum 383760 mean 0 lowest: 0 v30sns: 0 highest: 0 count 105 sum 387450 mean 0 lowest: 0 v30sns: 0 highest: 0 count 106 sum 391140 mean 0 lowest: 0 v30sns: 0 highest: 0 count 107 sum 394830 mean 0 lowest: 0 v30sns: 0 highest: 0 count 108 sum 398520 mean 0 lowest: 0 v30sns: 0 highest: 0 count 109 sum 402210 mean 0 lowest: 0 v30sns: 0 highest: 0 count 110 sum 405900 mean 0 lowest: 0 v30sns: 0 highest: 0 count 111 sum 409590 mean 0 lowest: 0 v30sns: 0 highest: 0 count 112 sum 413280 mean 0 lowest: 0 v30sns: 0 highest: 0 count 113 sum 416970 mean 0 lowest: 0 v30sns: 0 highest: 0 count 114 sum 420660 mean 0 lowest: 0 v30sns: 0 highest: 0 count 115 sum 424350 mean 0 lowest: 0 v30sns: 0 highest: 0 count 116 sum 428040 mean 0 lowest: 0 v30sns: 0 highest: 0 count 117 sum 431730 mean 0 lowest: 0 v30sns: 0 highest: 0 count 118 sum 435420 mean 0 lowest: 0 v30sns: 0 highest: 0 count 119 sum 439110 mean 0 lowest: 0 v30sns: 0 highest: 0 count 120 sum 442800 mean 0 lowest: 0 v30sns: 0 highest: 0 count 121 sum 446490 mean 0 lowest: 0 v30sns: 0 highest: 0 count 122 sum 450180 mean 0 lowest: 0 v30sns: 0 highest: 0 count 123 sum 453870 mean 0 lowest: 0 v30sns: 0 highest: 0 count 124 sum 457560 mean 0 lowest: 0 v30sns: 0 highest: 0 count 125 sum 461250 mean 0 lowest: 0 v30sns: 0 highest: 0 count 126 sum 464940 mean 0 lowest: 0 v30sns: 0 highest: 0 count 127 sum 468630 mean 0 lowest: 0 v30sns: 0 highest: 0 count 128 sum 472320 mean 0 lowest: 0 v30sns: 0 highest: 0 count 129 sum 476010 mean 0 lowest: 0 v30sns: 0 highest: 0 count 130 sum 479700 mean 0 lowest: 0 v30sns: 0 highest: 0 count 131 sum 483390 mean 0 lowest: 0 v30sns: 0 highest: 0 count 132 sum 487080 mean 0 lowest: 0 v30sns: 0 highest: 0 count 133 sum 490770 mean 0 lowest: 0 v30sns: 0 highest: 0 count 134 sum 494460 mean 0 lowest: 0 v30sns: 0 highest: 0 count 135 sum 498150 mean 0 lowest: 0 v30sns: 0 highest: 0 count 136 sum 501840 mean 0 lowest: 0 v30sns: 0 highest: 0 count 137 sum 505530 mean 0 lowest: 0 v30sns: 0 highest: 0 count 138 sum 509220 mean 0 lowest: 0 v30sns: 0 highest: 0 count 139 sum 512910 mean 0 lowest: 0 v30sns: 0 highest: 0 count 140 sum 516600 mean 0 lowest: 0 v30sns: 0 highest: 0 count 141 sum 520290 mean 0 lowest: 0 v30sns: 0 highest: 0 count 142 sum 523980 mean 0 lowest: 0 v30sns: 0 highest: 0 count 143 sum 527670 mean 0 lowest: 0 v30sns: 0 highest: 0 count 144 sum 531360 mean 0 lowest: 0 v30sns: 0 highest: 0 count 145 sum 535050 mean 0 lowest: 0 v30sns: 0 highest: 0 count 146 sum 538740 mean 0 lowest: 0 v30sns: 0 highest: 0 count 147 sum 542430 mean 0 lowest: 0 v30sns: 0 highest: 0 count 148 sum 546120 mean 0 lowest: 0 v30sns: 0 highest: 0 count 149 sum 549810 mean 0 lowest: 0 v30sns: 0 highest: 0 count 150 sum 553500 mean 0 lowest: 0 v30sns: 0 highest: 0 count 151 sum 557190 mean 0 lowest: 0 v30sns: 0 highest: 0 count 152 sum 560880 mean 0 lowest: 0 v30sns: 0 highest: 0 count 153 sum 564570 mean 0 lowest: 0 v30sns: 0 highest: 0 count 154 sum 568260 mean 0 lowest: 0 v30sns: 0 highest: 0 count 155 sum 571950 mean 0 lowest: 0 v30sns: 0 highest: 0 count 156 sum 575640 mean 0 lowest: 0 v30sns: 0 highest: 0 count 157 sum 579330 mean 0 lowest: 0 v30sns: 0 highest: 0 count 158 sum 583020 mean 0 lowest: 0 v30sns: 0 highest: 0 count 159 sum 586710 mean 0 lowest: 0 v30sns: 0 highest: 0 count 160 sum 590400 mean 0 lowest: 0 v30sns: 0 highest: 0 count 161 sum 594090 mean 0 lowest: 0 v30sns: 0 highest: 0 count 162 sum 597780 mean 0 lowest: 0 v30sns: 0 highest: 0 count 163 sum 601470 mean 0 lowest: 0 v30sns: 0 highest: 0 count 164 sum 605160 mean 0 lowest: 0 v30sns: 0 highest: 0 count 165 sum 608850 mean 0 lowest: 0 v30sns: 0 highest: 0 count 166 sum 612540 mean 0 lowest: 0 v30sns: 0 highest: 0 count 167 sum 616230 mean 0 lowest: 0 v30sns: 0 highest: 0 count 168 sum 619920 mean 0 lowest: 0 v30sns: 0 highest: 0 count 169 sum 623610 mean 0 lowest: 0 v30sns: 0 highest: 0 count 170 sum 627300 mean 0 lowest: 0 v30sns: 0 highest: 0 count 171 sum 630990 mean 0 lowest: 0 v30sns: 0 highest: 0 count 172 sum 634680 mean 0 lowest: 0 v30sns: 0 highest: 0 count 173 sum 638370 mean 0 lowest: 0 v30sns: 0 highest: 0 count 174 sum 642060 mean 0 lowest: 0 v30sns: 0 highest: 0 count 175 sum 645750 mean 0 lowest: 0 v30sns: 0 highest: 0 count 176 sum 649440 mean 0 lowest: 0 v30sns: 0 highest: 0 count 177 sum 653130 mean 0 lowest: 0 v30sns: 0 highest: 0 count 178 sum 656820 mean 0 lowest: 0 v30sns: 0 highest: 0 count 179 sum 660510 mean 0 lowest: 0 v30sns: 0 highest: 0 count 180 sum 664200 mean 0 lowest: 0 v30sns: 0 highest: 0 count 181 sum 667890 mean 0 lowest: 0 v30sns: 0 highest: 0 count 182 sum 671580 mean 0 lowest: 0 v30sns: 0 highest: 0 count 183 sum 675270 mean 0 lowest: 0 v30sns: 0 highest: 0 count 184 sum 678960 mean 0 lowest: 0 v30sns: 0 highest: 0 count 185 sum 682650 mean 0 lowest: 0 v30sns: 0 highest: 0 count 186 sum 686340 mean 0 lowest: 0 v30sns: 0 highest: 0 count 187 sum 690030 mean 0 lowest: 0 v30sns: 0 highest: 0 count 188 sum 693720 mean 0 lowest: 0 v30sns: 0 highest: 0 count 189 sum 697410 mean 0 lowest: 0 v30sns: 0 highest: 0 count 190 sum 701100 mean 0 lowest: 0 v30sns: 0 highest: 0 count 191 sum 704790 mean 0 lowest: 0 v30sns: 0 highest: 0 count 192 sum 708480 mean 0 lowest: 0 v30sns: 0 highest: 0 count 193 sum 712170 mean 0 lowest: 0 v30sns: 0 highest: 0 count 194 sum 715860 mean 0 lowest: 0 v30sns: 0 highest: 0 count 195 sum 719550 mean 0 lowest: 0 v30sns: 0 highest: 0 count 196 sum 723240 mean 0 lowest: 0 v30sns: 0 highest: 0 count 197 sum 726930 mean 0 lowest: 0 v30sns: 0 highest: 0 count 198 sum 730620 mean 0 lowest: 0 v30sns: 0 highest: 0 count 199 sum 734310 mean 0 lowest: 0 v30sns: 0 highest: 0 count 200 sum 738000 mean 0 lowest: 0 v30sns: 0 highest: 0 count 201 sum 741690 mean 0 lowest: 0 v30sns: 0 highest: 0 count 202 sum 745380 mean 0 lowest: 0 v30sns: 0 highest: 0 count 203 sum 749070 mean 0 lowest: 0 v30sns: 0 highest: 0 count 204 sum 752760 mean 0 lowest: 0 v30sns: 0 highest: 0 count 205 sum 756450 mean 0 lowest: 0 v30sns: 0 highest: 0 count 206 sum 760140 mean 0 lowest: 0 v30sns: 0 highest: 0 count 207 sum 763830 mean 0 lowest: 0 v30sns: 0 highest: 0 count 208 sum 767520 mean 0 lowest: 0 v30sns: 0 highest: 0 count 209 sum 771210 mean 0 lowest: 0 v30sns: 0 highest: 0 count 210 sum 774900 mean 0 lowest: 0 v30sns: 0 highest: 0 count 211 sum 778590 mean 0 lowest: 0 v30sns: 0 highest: 0 count 212 sum 782280 mean 0 lowest: 0 v30sns: 0 highest: 0 count 213 sum 785970 mean 0 lowest: 0 v30sns: 0 highest: 0 count 214 sum 789660 mean 0 lowest: 0 v30sns: 0 highest: 0 count 215 sum 793350 mean 0 lowest: 0 v30sns: 0 highest: 0 count 216 sum 797040 mean 0 lowest: 0 v30sns: 0 highest: 0 count 217 sum 800730 mean 0 lowest: 0 v30sns: 0 highest: 0 count 218 sum 804420 mean 0 lowest: 0 v30sns: 0 highest: 0 count 219 sum 808110 mean 0 lowest: 0 v30sns: 0 highest: 0 count 220 sum 811800 mean 0 lowest: 0 v30sns: 0 highest: 0 count 221 sum 815490 mean 0 lowest: 0 v30sns: 0 highest: 0 count 222 sum 819180 mean 0 lowest: 0 v30sns: 0 highest: 0 count 223 sum 822870 mean 0 lowest: 0 v30sns: 0 highest: 0 count 224 sum 826560 mean 0 lowest: 0 v30sns: 0 highest: 0 count 225 sum 830250 mean 0 lowest: 0 v30sns: 0 highest: 0 count 226 sum 833940 mean 0 lowest: 0 v30sns: 0 highest: 0 count 227 sum 837630 mean 0 lowest: 0 v30sns: 0 highest: 0 count 228 sum 841320 mean 0 lowest: 0 v30sns: 0 highest: 0 count 229 sum 845010 mean 0 lowest: 0 v30sns: 0 highest: 0 count 230 sum 848700 mean 0 lowest: 0 v30sns: 0 highest: 0 count 231 sum 852390 mean 0 lowest: 0 v30sns: 0 highest: 0 count 232 sum 856080 mean 0 lowest: 0 v30sns: 0 highest: 0 count 233 sum 859770 mean 0 lowest: 0 v30sns: 0 highest: 0 count 234 sum 863460 mean 0 lowest: 0 v30sns: 0 highest: 0 count 235 sum 867150 mean 0 lowest: 0 v30sns: 0 highest: 0 count 236 sum 870840 mean 0 lowest: 0 v30sns: 0 highest: 0 count 237 sum 874530 mean 0 lowest: 0 v30sns: 0 highest: 0 count 238 sum 878220 mean 0 lowest: 0 v30sns: 0 highest: 0 count 239 sum 881910 mean 0 lowest: 0 v30sns: 0 highest: 0 count 240 sum 885600 mean 0 lowest: 0 v30sns: 0 highest: 0 count 241 sum 889290 mean 0 lowest: 0 v30sns: 0 highest: 0 count 242 sum 892980 mean 0 lowest: 0 v30sns: 0 highest: 0 count 243 sum 896670 mean 0 lowest: 0 v30sns: 0 highest: 0 count 244 sum 900360 mean 0 lowest: 0 v30sns: 0 highest: 0 count 245 sum 904050 mean 0 lowest: 0 v30sns: 0 highest: 0 count 246 sum 907740 mean 0 lowest: 0 v30sns: 0 highest: 0 count 247 sum 911430 mean 0 lowest: 0 v30sns: 0 highest: 0 count 248 sum 915120 mean 0 lowest: 0 v30sns: 0 highest: 0 count 249 sum 918810 mean 0 lowest: 0 v30sns: 0 highest: 0 count 250 sum 922500 mean 0 lowest: 0 v30sns: 0 highest: 0 count 251 sum 926190 mean 0 lowest: 0 v30sns: 0 highest: 0 count 252 sum 929880 mean 0 lowest: 0 v30sns: 0 highest: 0 count 253 sum 933570 mean 0 lowest: 0 v30sns: 3690 highest: 3690 count 0 sum 937260 mean 0 lowest: 0 v30sns: 3690 highest: 3690 count 1 sum 940950 mean 0