Function Call without Arguments

#include <stdio.h>

void func1()
{
    int a=10;
    printf("\nIn func1 the value of a is: %d",a);
}

void func2()
{
    int a=12;
    printf("\nIn func2 the value of a is: %d",a);
}

int main()
{
    printf("In Func Main");
    func1();
    func2();
    func1();
    return 0;
}

Output:

In Func Main
In func1 the value of a is: 10
In func2 the value of a is: 12
In func1 the value of a is: 10