Print Strong numbers from 1 to n Dry Run in C

Print Strong numbers from 1 to n 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.

Print Strong numbers from 1 to n Program Code

#include <stdio.h>
int factorial(int n) {
    int fact = 1, i;
    for(i = 1; i <= n; i++) {
        fact *= i;
    }
    return fact;
}

int isStrong(int num) {
    int sum = 0, temp;
    for(temp = num; temp != 0; temp /= 10) {
        int digit = temp % 10;
        sum += factorial(digit);
    }
    return sum == num;
}

int main() {
    int limit, num;
    printf("Enter limit: ");
    scanf("%d", &limit);
    
    printf("Strong numbers from 1 to %d:\n", limit);
    for(num = 1; num <= limit; num++) {
        if(isStrong(num)) {
            printf("%d ", num);
        }
    }
    return 0;
}

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