i don't have a clue what is wrong here....
the program is supposed to add, subtract, multiply and divide two real numbers.

``````#include<stdio.h>

float subtract(float x, float y);
float multiply(float x, float y);
float divide(float x, float y);

int main (void)
{

int choice;
float x, y;

while(1)
{
printf("\nPress 1 to add two  numbers.\n");
printf("Press 2 to subtract two numbers.\n");
printf("Press 3 to multiply two numbers.\n");
printf("Press 4 to divide two numbers.\n");
printf("Press 5 to exit the program.\n");
scanf("%d",&choice);

if(choice==5)
{
return 0;
}

if(choice >= 1 && choice <= 4)

{
scanf("%f", &x);

scanf("%f", &y);

if (choice==1)
{
printf("The sum of both values inputted: % f\n", add(x, y));
}

{
return x+y;
}

else if (choice==2)
{
printf("The difference of both values inputted: % f\n", subtract(x, y));
}

float subtract(float x, float y)

{
return x-y;
}

else if (choice==3)
{
printf("The difference of both values inputted: % f\n", multiply(x, y));
}

float multiply(float x, float y)

{
return x*y;
}

else if (choice==4)
{
printf("The difference of both values inputted: % f\n", divide(x, y));
scanf("%f",x/y)
}

float divide(float x, float y)

{
return x/y;
}

}
}
``````

what doesn't it do that you want it to do? Or what does it do that you don't want it to do?

## All 2 Replies

what doesn't it do that you want it to do? Or what does it do that you don't want it to do?

Few problems here:

1. Function definition inside another function (take all the function definitions outside the `main` function scope).
2. Missing `}` (you open 4 curly brackets for: `main`, `while`, `if`, `if` and you close only 3 curly brackets).
3. Missing `;` after `scanf` (line 75)
4. Is there any reason at all for that `scanf` (line 75)?

That to ignore the warning coming from `scanf`.

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