#include <stdio.h>
int main()
{
      int firstNo, secondNo, swappedvar;
     
      printf("Enter the first number: ");
      scanf("%d", &firstNo);
     
      printf("Enter the second number: ");
      scanf("%d",&secondNo);

      swappedvar = firstNo;
      firstNo = secondNo;
      secondNo = swappedvar;
     
      printf("\n After swapping, firstNumber is :  %d\n", firstNo);
      printf("  After swapping, secondNumber is : %d", secondNo);
     
return 0;
}
OUTPUT :

Enter the first number: 123
Enter the second number:789

 After swapping, firstNumber is :  789
After swapping, secondNumber is : 123
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