Find largest digit in a number Dry Run in C

Find largest digit in a number is an interactive C dry run visualizer from the While 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.

Find largest digit in a number Program Code

#include <stdio.h>
int main() {
    int num, largest = 0, digit;
    
    printf("Enter a number: ");
    scanf("%d", &num);
    
    while(num > 0) {
        digit = num % 10;
        if(digit > largest)
            largest = digit;
        num = num / 10;
    }
    
    printf("Largest digit = %d\n", largest);
    return 0;
}

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