#include <stdio.h> 
#include <conio.h> 
main() { 
int a;
 printf("Program: +-");
printf("\ninput number = "); 
scanf("%d",&a); 
if(a==0){ 
printf("Program: +-(+)");
float  a,b,c;
	printf("\nInput a :");
	scanf("%f",&a);
    printf("\nInput b :");
    scanf("%f",&b);
	c=a+b;
	printf("\nResult : %.2f",c); 
} 
else{ 
float a,b,c;
printf("Program: +-(-)");
	printf("\nInput a :");
	scanf("%f",&a);
    printf("\nInput b :");
    scanf("%f",&b);
	c=a-b;
	printf("\nResult : %.2f",c); 
} 
}