global and local variables v1.c

#include<stdio.h>

int a=2,b=5;    // global variables

int sum(int a)
{
    // in this function sum() a is local variable and a=3 because sum(3)
    printf("\n In function sum() \t a=%d \t b=%d \n",a,b);

    return a+b; // b is global variable and b=5
}

int main()
{
    // global variables
    printf("\n In main() before calling function sum(3) \t a=%d \t b=%d \n",a,b);

    // corrected quotes "%x"
    printf("\n Result is %d \n", sum(3));

    // global variables
    printf("\n In main(), after calling function sum(3) \t a=%d \t b=%d \n",a,b);

    return 0;
}