xy.c

#include <stdio.h>
#include <math.h>
void main() {
        float x,y;
        printf("x: "); scanf("%f",&x);
        printf("y: "); scanf("%f",&y);
        if ((x < 0) && (y < 0)) {
                x = fabs(x);
                y = fabs(y);
        }
        printf("\n");
        printf("x = %f\n",x);
        printf("y = %f\n",y);
}