C Decision Making: if, switch

#include <stdio.h>
int main() {
    int year = 2024;
    if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0)
        printf("%d is a leap year\n", year);
    else
        printf("%d is not a leap year\n", year);
    return 0;
}

#include <stdio.h>
int main() {
    char op = '*';
    int a = 6, b = 3;
    switch (op) {
        case '+': printf("%d\n", a + b); break;
        case '-': printf("%d\n", a - b); break;
        case '*': printf("%d\n", a * b); break;
        case '/': printf("%d\n", a / b); break;
        default:  printf("Invalid operator\n");
    }
    return 0;
}