CBeginner

C Control Flow

Master control flow in C: if and else statements, the switch statement, for loops, and while loops with clear examples.

01if, else if, else

main.c

#include <stdio.h>

int main() {
    int score = 72;
    if (score >= 90) printf("A\n");
    else if (score >= 70) printf("B\n");
    else printf("C\n");
    return 0;
}

Output

02switch statement

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main.c

#include <stdio.h>

int main() {
    int day = 3;
    switch (day) {
        case 1: printf("Mon\n"); break;
        case 3: printf("Wed\n"); break;
        default: printf("Other\n");
    }
    return 0;
}

Output

Wed

03for loop

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main.c

#include <stdio.h>

int main() {
    for (int i = 1; i <= 5; i++) {
        printf("%d ", i);
    }
    printf("\n");
    return 0;
}

Output

1 2 3 4 5

04while loop

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main.c

#include <stdio.h>

int main() {
    int n = 5;
    while (n > 0) {
        printf("%d ", n);
        n--;
    }
    printf("\n");
    return 0;
}

Output

5 4 3 2 1