Swap Using Pointers

Easy Pointers

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Problem Statement

Write a C program with a function `void swap(int *a, int *b)` to swap two numbers using pointers.

Input Format

Two space-separated integers A and B.

Output Format

Print swapped values of A and B separated by a space.

Constraints

-10000 <= A, B <= 10000

Sample Input

10 20

Sample Output

20 10

Explanation

Values at addresses of A and B are swapped via pointer dereferencing.

Starter Code

#include <stdio.h>

void swap(int *a, int *b) {
    // Write your code here
}

int main() {
    int a, b;
    if (scanf("%d %d", &a, &b) == 2) {
        swap(&a, &b);
        printf("%d %dn", a, b);
    }
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

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