Calculator

#include <stdio.h>

float Add(float a, float b);
float Subtract(float a, float b);
float Multiply(float a, float b);
float Divide(float a, float b);

int main()
{
    float a, b;
    float result = 0;
    char sign;

    printf("Vuvedete a: "); scanf("%f", &a);
    printf("Znak: "); scanf(" %c", &sign); //Space necessary here or won't work
    printf("Vuvedete b: "); scanf("%f", &b);

    if(sign == '+')
    {
        result = Add(a, b);
    }
    else if(sign == '-')
    {
        result = Subtract(a, b);
    }
    else if(sign == '*')
    {
        result = Multiply(a, b);
    }
    else if(sign == '/')
    {
        result = Divide(a, b);
    }

    printf("%f %c %f = %f", a, sign, b, result);

    return 0;
}

float Add(float a, float b)
{
    return a + b;
}

float Subtract(float a, float b)
{
    return a - b;
}

float Multiply(float a, float b)
{
    return a * b;
}

float Divide(float a, float b)
{
    return a / b;
}