IO 15

• Problem Description

  
  write a program to swap two numbers using a temporary variable
  
  Input and Output Format:
  
  Refer sample input and output for formatting specification.
  
  All float values are displayed correct to 2 decimal places.
  
  All text in bold corresponds to input and the rest corresponds to output.

• CODING ARENA

• #include <stdio.h>

  int main()

  {

    int x,y,tmp;

    scanf("%d%d",&x,&y);

    printf("Before Swapping\nx=%d\ny=%d",x,y);

    tmp=x;

    x=y;

    y=tmp;

    printf("\nAfter Swapping\n%d\n%d",x,y);

    return 0;

  }

• Test Case 1

  
  Input (stdin)

  10
  
  20
  
  

  Expected Output

  Before Swapping
  
  x=10
  
  y=20
  
  After Swapping
  
  20
  
  10

• Test Case 2

  
  Input (stdin)

  4
  
  5
  
  

  Expected Output

  Before Swapping
  
  x=4
  
  y=5
  
  After Swapping
  
  5
  
  4