Check whether digits are in decreasing order (left to right) Dry Run in C

Check whether digits are in decreasing order (left to right) 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.

Check whether digits are in decreasing order (left to right) Program Code

#include <stdio.h>
int main() {
    int num, decreasing = 1, temp;
    printf("Enter a number: ");
    scanf("%d", &num);
    
    int prevDigit = num % 10;
    for(temp = num / 10; temp != 0; temp /= 10) {
        int currDigit = temp % 10;
        if(currDigit <= prevDigit) {
            decreasing = 0;
            break;
        }
        prevDigit = currDigit;
    }
    
    if(decreasing) {
        printf("Digits are in DECREASING order (left to right)\n");
    } else {
        printf("Digits are NOT in decreasing order\n");
    }
    return 0;
}

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