C programming example that implements a modified string length function (from ECE 2534) , C (gcc)

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// Example program for first problem on list -- strlen
// What happens when the string that you enter is longer than SIZE
// Is that what you expect?

#include  <stdio.h>

#define SIZE 30
#define ERROR -1

// I modified the goal a bit
// This function tries to determine the length 
// of a C string. If it is longer than maxSize,
// it returns an ERROR. Otherwise, it returns the
// length of the string.
int strlen(char *str, int maxSize)
{
    int i;
    for (i=0; i<maxSize; i++) {
        if (str[i]==0) {
            return(i);
        }
    }
    return(ERROR);
}

int main(void)
{
    // my array for the string
    char myString[SIZE];
    
    int stringLength;
    
    printf("Example program for my strlen implmentation\n");
    
    // First read in an input string
    if (fgets(myString, SIZE, stdin)) {
        // input has worked, do something with data
        stringLength = strlen(myString,SIZE);
        if (stringLength >= 0) {
            printf("Read in the string \"%s\", length calculated as %d\n",
                   myString, stringLength);
        } else {
            printf("Error calculating string length!\n");
        }           
    } else {
        printf("Error reading in the string!\n");
    }
    
    return 0;
}

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Compilation time: 0.12 sec, absolute running time: 0.14 sec, cpu time: 0 sec, memory peak: 3 Mb, absolute service time: 0,34 sec

C programming example that implements a modified string length functio...