Data structure

** No Argument No Return**
#include<stdio.h>
void printline();
int main()
{
    printline();
    return 0;
}
void printline()
{
    printf("Sujon shekh");
}

**Argument No Return**
#include<stdio.h>
void Add_wR(int c,int d);
int main()
{
    int a=10, b=20;
    fuad(a,b);
    return 0;
}

void fuad(int c,int d)
{
    int sum;
    sum=c+d;
    printf("%d",sum);
}
**Argument and Return**
#include<stdio.h>
void Add_R(int c,int d);
int main()
{
    int a=10, b=20, k;
    k=sujon(a,b);
    printf("%d",k);
    return 0;
}

int sujon(int c,int d)
{
    int sum;
    sum=c+d;
    return sum;
}