Problem 55
By Supreme2023-03-16
Problem Statement :
Write a C program to swap the two values using pointers.
Code:
#include <stdio.h>
void swap(int *a, int *b);
int main() {
//55. Write a C program to swap the two values using pointers.
printf("\tSwapping\n");
printf("============================\n\n");
int x = 6, y = 9;
printf("Before swap: x = %d, y = %d\n", x, y);
swap(&x, &y);
printf("\nAfter swap: x = %d, y = %d\n", x, y);
return 0;
}
void swap(int *a, int *b) {
int temp = *a;
*a = *b;
*b = temp;
}
Description :
- This program demonstrates how to swap two values using pointers in C language.
- The program starts by defining a function
swapthat takes two integer pointers as parameters. - The
swapfunction uses a temporary variabletempto swap the values of the integers pointed to byaandb. - The
mainfunction declares two integer variablesxandyand assigns them initial values of 6 and 9, respectively. - The
mainfunction then prints the values ofxandybefore the swap. - The
mainfunction calls theswapfunction, passing in the addresses ofxandyas arguments. - The
swapfunction swaps the values ofxandy. - The
mainfunction prints the values ofxandyafter the swap. - Overall, this program swaps the values of
xandyby passing their addresses to theswapfunction, which uses pointer manipulation to exchange their values.
Output Image:
