Question

Write a c program using pass by refrence method to swap two character

Answer 1

#include<stdio.h> #include<conio.h> void swap(int *num1, int *num2); void main() { int x, y; printf("\nEnter First number : "); scanf("%d", &x); printf("\nEnter Second number : "); scanf("%d", &y); printf("\nBefore Swaping x = %d and y = %d", x, y); swap(&x, &y); // Function Call - Pass By Reference printf("\nAfter Swaping x = %d and y = %d", x, y); getch(); } void swap(int *num1, int *num2) { int temp; temp = *num1; *num1 = *num2; *num2 = temp; }

Output :

Enter First number : 12 Enter Second number : 21 Before Swaping x = 12 and y = 21 After Swaping x = 21 and y = 12