Game Controller

Question: Input instruction: Take a character as input from user. (You a loop for repeated input)
Output instruction: Show the current value of X and Y coordinate.

Problem description: 
If a person press 'w' then increment Y coordinate.
If a person press 's' then decrement Y coordinate.
If a person press 'a' then decrement X coordinate.
If a person press 'd' then increment X coordinate

Solution:

#include<stdio.h>

int main()

{

    char key;

    int sum1=0, sum2=0;

while(1)

    {

        scanf("%c", &key);

        switch(key)

        {

        case 'w':

            sum1++;

            printf("increment Y coordinate %d\n", sum1);

            break;

        case 's':

            sum1--;

            printf("decrement Y coordinate %d\n", sum1);

            break;

        case 'a':

            sum2--;

            printf("decrement X coordinate %d\n", sum2);

            break;

        case 'd':

            sum2++;

            printf("increment X coordinate %d\n", sum2);

            break;

        }

    }

    return 0;

}

Credit: Abu Al Nasir Mitul