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Swapping two variable value without using third variable in C/C++
The following is an example of swapping two variables.
Example
#include <stdio.h>
int main() {
int a,b;
printf("Enter the value of a : ");
scanf("%d", &a);
printf("\nEnter the value of b : ");
scanf("%d", &b);
a += b -= a = b - a;
printf("\nAfter Swapping : %d\t%d", a, b);
return 0;
}Output
Enter the value of a : 23 Enter the value of b : 43 After Swapping : 4323
In the above program, two variables a and b are declared and initialized dynamically at run time.
int a,b;
printf("Enter the value of a : ");
scanf("%d", &a);
printf("\nEnter the value of b : ");
scanf("%d", &b);Numbers are swapped without using any third variable.
a += b -= a = b - a;
Updated on: 26-Jun-2020
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