Nested If

Nested if statements refine a decision in stages.

nested_if.c

#include <stdio.h>

int main(void) {
    int score = ;
    const char *label = "unknown";

    if (score >= 60) {
        if (score >= 90) {
            label = "honors";
        } else {
            label = "pass";
        }
    } else {
        label = "retry";
    }

    printf("%s:%d\n", label, score);
    return 0;
}

#include <stdio.h>

int main(void) {
    int score = ;
    const char *label = "unknown";

    if (score >= 60) {
        if (score >= 90) {
            label = "honors";
        } else {
            label = "pass";
        }
    } else {
        label = "retry";
    }

    printf("%s:%d\n", label, score);
    return 0;
}

#include <stdio.h>

int main(void) {
    int score = ;
    const char *label = "unknown";

    if (score >= 60) {
        if (score >= 90) {
            label = "honors";
        } else {
            label = "pass";
        }
    } else {
        label = "retry";
    }

    printf("%s:%d\n", label, score);
    return 0;
}

nested branch An inner `if` only runs after the outer condition has chosen that path.

classification Multiple checks can turn one numeric value into a label.