Days in Month using Switch Dry Run in C

Days in Month using Switch is an interactive C dry run visualizer from the Switch programs section. Study the source code, then use the execution controls to follow each step, variable update, highlighted line, and console output.

This page provides a browser-based dry run with source-code highlighting, auto-scroll, voice narration controls, and execution output for learning the program step by step.

Days in Month using Switch Program Code

#include <stdio.h>
int main() {
    int m;
    scanf("%d", &m);

    switch(m) {
        case 4: case 6: case 9: case 11:
            printf("30 days"); break;
        case 2:
            printf("28/29 days"); break;
        case 1: case 3: case 5: case 7:
        case 8: case 10: case 12:
            printf("31 days"); break;
        default:
            printf("Invalid");
    }
    return 0;
}

View the complete Switch programs page.