C Language Tutorials by Ghulam Murtaza Dahar - HTML preview

Output

C Programming

Explanation of How this program works

1. Every program starts from main() function.

2. printf() is a library function to display output which only works if #include<stdio.h>is included at the beginning.

3. Here, stdio.h is a header file (standard input output header file) and #include is command to paste the code from the header file when necessary. When compiler encounters printf() function and doesn't find stdio.h header file, compiler shows error.

4. Code return 0; indicates the end of program. You can ignore this statement but, it is good programming practice to use return 0;.

I/O of integers in C

#include<stdio.h>

int main()

{

int c=5;

printf("Number=%d",c);

return 0;

}