Form number by keeping only odd digits Dry Run in C

Form number by keeping only odd digits is an interactive C dry run visualizer from the For 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.

Form number by keeping only odd digits Program Code

#include <stdio.h>
int main() {
    int num, result = 0, place = 1, temp;
    printf("Enter a number: ");
    scanf("%d", &num);
    
    for(temp = num; temp != 0; temp /= 10) {
        int digit = temp % 10;
        if(digit % 2 != 0) {  // Odd digit
            result = digit * place + result;
            place *= 10;
        }
    }
    
    printf("Number with only odd digits: %d\n", result);
    return 0;
}

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