**Size of any function is calculated as:**

Size of function = Size of all local variable which has declared in function + Size of those global variables which has used in function+ Size of all its parameter+ Size of returned value if it is an address. Example:

**What is size of calculate function?**

int x=2;

int* calculate

void main(){

int *p,a=0,b=5;

p=calculate(a,b);

printf(“%d”,*p);

}

int * calculate(int a,int b){

static int z;

z=a+x+b;

return &z;

}

Answer:

Size of calculate function= 2 (global variable x)+ 2 (local variable z) +2*2 (parameter a, b)+ 2 ( returning address of z)= 10 bytes