Count pairs where i < j (for loop) Dry Run in C

Count pairs where i < j (for loop) is an interactive C dry run visualizer from the Nested 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.

Count pairs where i < j (for loop) Program Code

#include <stdio.h>
int main() {
    int n, count = 0, i, j;
    printf("Enter n: ");
    scanf("%d", &n);
    
    printf("Pairs with i < j:\n");
    for(i = 1; i <= n; i++) {
        for(j = 1; j <= n; j++) {
            if(i < j) {
                printf("(%d,%d) ", i, j);
                count++;
            }
        }
    }
    
    printf("\nTotal pairs with i < j: %d\n", count);
    printf("Formula: n(n-1)/2 = %d\n", n*(n-1)/2);
    return 0;
}

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