String Compare

A character-by-character comparison decides whether two strings contain the same text.

string_compare.c

#include <stdio.h>

int sameText(const char left[], const char right[]) {
    int i = 0;
    while (left[i] != '\0' && right[i] != '\0') {
        if (left[i] != right[i]) {
            return 0;
        }
        i++;
    }
    return left[i] == right[i];
}

int main(void) {
    char first[] = "cat";
    char second[] = "car";
    char third[] = "cat";
    int useSecond = ;

    const char *other = useSecond ? second : third;
    int same = sameText(first, other);

    printf("same=%d\n", same);
    return 0;
}

#include <stdio.h>

int sameText(const char left[], const char right[]) {
    int i = 0;
    while (left[i] != '\0' && right[i] != '\0') {
        if (left[i] != right[i]) {
            return 0;
        }
        i++;
    }
    return left[i] == right[i];
}

int main(void) {
    char first[] = "cat";
    char second[] = "car";
    char third[] = "cat";
    int useSecond = ;

    const char *other = useSecond ? second : third;
    int same = sameText(first, other);

    printf("same=%d\n", same);
    return 0;
}

compare loop The loop advances while characters match and neither string has ended.

equality result Two strings are equal only when both reach `'\0'` at the same position.