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 A program to swap the value of two variable without using third variable. 


#include <stdio.h>  
#include <conio.h> 
void main(){
int a,b; // Defining two variables.
printf("Enter the value of a, b"); //Printing the statement.
scanf("%d%d",&a,&b); //Getting the value of a,b from user.
a=a+b;
b=a-b;
a=a-b;
printf("The value of a: %d\nThe value of b: %d"); //Printing the swap value.
getch();
}

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