C Programming in Ubuntu Linux

[mkausal]

Can stdio.h not be used in C programming in Ubuntu Linux? It is throwing error that no such file or directory, referring to stdio.h
This, I know is very silly doubt, I've also done many programs on UNIX OS, but I'm new to Ubuntu.
I'll be happy if someone helps at the earliest.

[techieMoe]

Can stdio.h not be used in C programming in Ubuntu Linux? It is throwing error that no such file or directory, referring to stdio.h
This, I know is very silly doubt, I've also done many programs on UNIX OS, but I'm new to Ubuntu.
I'll be happy if someone helps at the earliest.

STDIO.H is an ANSI-standard header file that works on all operating systems that support ANSI. That includes the big three: Windows, Mac OS and Linux. If you're getting an error on your import it's a code problem. Post your code and we'll do what we can to help you.

[mkausal]

STDIO.H is an ANSI-standard header file that works on all operating systems that support ANSI. That includes the big three: Windows, Mac OS and Linux. If you're getting an error on your import it's a code problem. Post your code and we'll do what we can to help you.

Hi,
I'm putting my code here...
#include<stdio.h>
main()
{
int i,n,sum=0;
printf("Enter the value of n");
scanf("%d",&n);
if(fork()==0)
{
for(i=0;i<n;i=i+2)
{
sum=sum+i;
}
printf("\n Even sum is %d",sum);
}
else
{
if(fork()==0)
{
for(i=1;i<n;i=i+2)
{
sum=sum+i;
}
printf("\n Odd sum is %d",sum);
}
}
}

[techieMoe]

The first thing I notice is your MAIN() function should return a value. Even if it's just void, it should have a return value before it. In C++ the convention is to have it return an INT.

int main(){
. . .

return 0;
}

Also, in order to use the FORK() method I think you also need to include the unistd.h header.

#include <unistd.h>

[mkausal]

The first thing I notice is your MAIN() function should return a value. Even if it's just void, it should have a return value before it. In C++ the convention is to have it return an INT.

int main(){
. . .

return 0;
}

Also, in order to use the FORK() method I think you also need to include the unistd.h header.

#include <unistd.h>

These are the errors shown in the terminal even if I correct the things you have mentioned...

fork.c:1:18: error: stdio.h: No such file or directory
fork.c:2:19: error: unistd.h: No such file or directory
fork.c: In function ‘main’:
fork.c:6: warning: incompatible implicit declaration of built-in function ‘printf’
fork.c:7: warning: incompatible implicit declaration of built-in function ‘scanf’

[techieMoe]

Have you installed GCC on your machine? Ubuntu doesn't come with the proper programming libraries by default. Try running this command:

sudo apt-get install build-essential

[mkausal]

Have you installed GCC on your machine? Ubuntu doesn't come with the proper programming libraries by default. Try running this command:

sudo apt-get install build-essential

Thanks for the information, i thought gcc would be installed by default. I'll try and check. Bye..