# C Exercises: Swaps two numbers without using third variable

## C Basic Declarations and Expressions: Exercise-55 with Solution

Write a C program that swaps two numbers without using a third variable.

**Pictorial Presentation:**

**Sample Solution:**

**C Code:**

```
#include<stdio.h>
int main() {
int x, y;
// Prompt user to input values for x and y
printf("Input value for x & y: \n");
scanf("%d%d",&x,&y);
// Display the values of x and y before swapping
printf("Before swapping the value of x & y: %d %d",x,y);
// Swap the values of x and y using arithmetic operations
x = x + y;
y = x - y;
x = x - y;
// Display the values of x and y after swapping
printf("\nAfter swapping the value of x & y: %d %d",x,y);
return 0;
}
```

Sample Output:

Input value for x & y: Before swapping the value of x & y: 5 7 After swapping the value of x & y: 7 5

**Flowchart:**

**C programming Code Editor:**

**Previous:** Write a C program that accepts a distance in centimeters and prints the corresponding value in inches.

**Next:** Write a C program to shift given data by two bits to the left.

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