C - Program

put them in two variables then add them

#include"stdio.h"
main ()
{int a,b,s;
printf(" enter 2 integers ");
scanf("%d%d",&a,&b);
s = a+b;
printf("%d",s);
return 0;
}

hi i am a also learning c. in the above commands why have u put return 0; after printf("%d",s);. I mean what does return 0;do and why is it needed because as it is we we havn't put it in a loop so why return 0. Is there no need to have clrscr(); before the int. Please reply to me asap.

coz we haven't taken void main().
or
return 0 means it is not returning any value to the main function. if it was returning any value than we would have written int main() or any other way

clrscr(); used to clear the output screen .. if you want that then you have to include conio.h

#include iostream.h
#include conio.h
#include iomanip.h
void main()
{
clrscr();
int l,w;
cout<<"L=";
cin>>w;
cout<<"W=";
cin>>l;
for(int i=1;i<=l;i++)
{
if((i==1)||(i==l))
{
for(int k=1;k<=w;k++)
cout<<"*";
cout< }
else
cout<<"*"<

}
getch();
}


check the signs in the header lines.. not allowed here

Regarding the return statment .. it's not a must to include it . and here's a link for you guys out there who wants to learn c programming .. www.cprogramming.com

hi
i want 8 queen puzzle solution