interestCalculationSample, C (clang)

interestCalculationSample

Language: Layout:

#include <stdio.h>
#define NUM_RATES (sizeof(value)/sizeof(value[0]))     /*   NUM_RATES is a macro that finds the length of the array 
                                                   based on the SIZE OF THE     ARRAY in bytes ( size of(value) ) DIVIDED BY the SIZE OF EACH ELEMENT ( sizeof(value[0])  )   */
#define INITIAL_BALANCE 100.00
main(){
    int low_rate;                         /*User input --- the lowest interest rate*/
    int num_years;                        /*User input --- the number of years*/
    int i; 
    int year;
    float value[5];                       /*Remember that the number in the brackets represents the number of elements --- 1 for each of the 5 year timeline in this case */
    
    printf("Enter interest rate: ");
    scanf("%d", &low_rate);
    printf("Enter number of years: ");
    scanf("%d", &num_years);

printf("\nYears");                 /*This statement prints out the label for the "YEAR" column on the left side of the chart */

/*This loop prints out the LABELS FOR THE INTEREST RATE ROW AT THE TOP.  Right next to the "Year" */
    
        for (i = 0; i < NUM_RATES; i++) {    /*   NUM_RATES is 5 here
                                             Remember that NUM_RATES, seen above, is a macro for (sizeof(value)/sizeof(value[0]))
                                             This macro measures the LENGTH of the array by dividing the array size in bytes by the element size in bytes
                                             The macro format makes it easy for the loops to adjust if we need to CHANGE THE SIZE OF THE ARRAY   */
    
        printf("%6d", low_rate + i);         /* Prints out the low rate + i   according to the loop above */
        value[i] = INITIAL_BALANCE; // set each value to the initial value
    }
    printf("\n");                       /*   This statement starts a new line for the loop below   */
/*   This loop prints the numbers IN THE YEARS COLUMN.    Counts from 1 to the number of years entered by the user   */

for (year = 1; year <= num_years; year++) {
        printf("%3d    ", year);
        /*   This NESTED loop increments the interest rate FROM ITS LOWEST VALUE TO ITS HIGHEST VALUE AND MULTIPLIES IT BY $100. Occurs right after the year column entry printed   */
        for (i = 0 ;  i < NUM_RATES ; i++) {
            printf("value[%d] before applying interest: %7.2f\n",i,value[i]);
            value[i] = value[i] + ( ((low_rate + i) / 100.0)  *  value[i]);
            printf("value after applying interest %7.2f\n", value[i]);
        }
        printf("\n");             /*This statement causes the value to be placed on the next line*/
    }

return 0;

}

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Compilation time: 0.12 sec, absolute running time: 0.12 sec, cpu time: 0 sec, memory peak: 3 Mb, absolute service time: 0,34 sec

Warning(s):

source_file.c:5:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
main(){
^
1 warning generated.

Enter interest rate: Enter number of years: Years 5 6 7 8 9 1 value[0] before applying interest: 100.00 value after applying interest 105.00 value[1] before applying interest: 100.00 value after applying interest 106.00 value[2] before applying interest: 100.00 value after applying interest 107.00 value[3] before applying interest: 100.00 value after applying interest 108.00 value[4] before applying interest: 100.00 value after applying interest 109.00 2 value[0] before applying interest: 105.00 value after applying interest 110.25 value[1] before applying interest: 106.00 value after applying interest 112.36 value[2] before applying interest: 107.00 value after applying interest 114.49 value[3] before applying interest: 108.00 value after applying interest 116.64 value[4] before applying interest: 109.00 value after applying interest 118.81 3 value[0] before applying interest: 110.25 value after applying interest 115.76 value[1] before applying interest: 112.36 value after applying interest 119.10 value[2] before applying interest: 114.49 value after applying interest 122.50 value[3] before applying interest: 116.64 value after applying interest 125.97 value[4] before applying interest: 118.81 value after applying interest 129.50 4 value[0] before applying interest: 115.76 value after applying interest 121.55 value[1] before applying interest: 119.10 value after applying interest 126.25 value[2] before applying interest: 122.50 value after applying interest 131.08 value[3] before applying interest: 125.97 value after applying interest 136.05 value[4] before applying interest: 129.50 value after applying interest 141.16 5 value[0] before applying interest: 121.55 value after applying interest 127.63 value[1] before applying interest: 126.25 value after applying interest 133.82 value[2] before applying interest: 131.08 value after applying interest 140.26 value[3] before applying interest: 136.05 value after applying interest 146.93 value[4] before applying interest: 141.16 value after applying interest 153.86 6 value[0] before applying interest: 127.63 value after applying interest 134.01 value[1] before applying interest: 133.82 value after applying interest 141.85 value[2] before applying interest: 140.26 value after applying interest 150.07 value[3] before applying interest: 146.93 value after applying interest 158.69 value[4] before applying interest: 153.86 value after applying interest 167.71 7 value[0] before applying interest: 134.01 value after applying interest 140.71 value[1] before applying interest: 141.85 value after applying interest 150.36 value[2] before applying interest: 150.07 value after applying interest 160.58 value[3] before applying interest: 158.69 value after applying interest 171.38 value[4] before applying interest: 167.71 value after applying interest 182.80 8 value[0] before applying interest: 140.71 value after applying interest 147.75 value[1] before applying interest: 150.36 value after applying interest 159.38 value[2] before applying interest: 160.58 value after applying interest 171.82 value[3] before applying interest: 171.38 value after applying interest 185.09 value[4] before applying interest: 182.80 value after applying interest 199.26 9 value[0] before applying interest: 147.75 value after applying interest 155.13 value[1] before applying interest: 159.38 value after applying interest 168.95 value[2] before applying interest: 171.82 value after applying interest 183.85 value[3] before applying interest: 185.09 value after applying interest 199.90 value[4] before applying interest: 199.26 value after applying interest 217.19 10 value[0] before applying interest: 155.13 value after applying interest 162.89 value[1] before applying interest: 168.95 value after applying interest 179.08 value[2] before applying interest: 183.85 value after applying interest 196.72 value[3] before applying interest: 199.90 value after applying interest 215.89 value[4] before applying interest: 217.19 value after applying interest 236.74