5.Two numbers are input through the keyboard into two locations C and D. Write a program to interchange the contents of C and D.

 #include<stdio.h>

int main()

{

    int C, D, T;

    printf("Enter the value of C: ");

    scanf("%d", &C);

    printf("Enter the value of D: ");

    scanf("%d", &D);

    C = C+D;

    D = C-D;

    C = C-D;

    printf("\n The value of C: %d", C);

    printf("\n The value of D: %d", D);

    return 0;

}