Error while running program with certain operator and operands in C

Question

I was trying to run a program but it shows an error as:

Invalid binary operator float to int

When I tried making it float it says:

Invalid binary operator float to float

The problem is with % operator And its operands.

Please tell me what to do?

#include <stdio.h>
int main()
{
    float x,y;
    scanf("%f%f",&x,&y);
    float z=x%5.0f;
    if(x<=y && z==0)
        printf("%.2f",y-x-0.50);
    else if (x>y || z!=0)
            printf("%.2f",y);
    return 0;
 }

Answer 1

Modulus % only makes sense with integers because it is defined as the remainder from integer division. You can't do integer division with floats.