Simple Calculator Dry Run in C

Simple Calculator is an interactive C dry run visualizer from the If 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.

Simple Calculator Program Code

#include <stdio.h>
int main() {
    int a, b;
    char op;
    scanf("%d %d %c", &a, &b, &op);

    if (op == '+')
        printf("%d", a + b);
    else if (op == '-')
        printf("%d", a - b);
    else if (op == '*')
        printf("%d", a * b);
    else if (op == '/')
        printf("%d", a / b);
    else
        printf("Invalid Operator");

    return 0;
}

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