Basics of C Programming

Simple program syntax of c language

first include " #include<stdio.h>" and "#include<conio.h>" header file in top of program. define main() function.

Program

#include <stdio.h>
#include <conio.h>
void main(){
 clrscr();
  /* code */
 getch();
}

See Output

Note:- main() is a user define function.

printf() function in C

It use to display output.

It is the function of stdio.h header file.

Syntax

printf("............");

clrscr() in C

It use to clear output screen.

Without clrscr() run program more time, you can see previous output data in current output screen. Therefore clrscr() use to clear screen first then display output.

getch() in C

If you do not use getch() then output screen do not wait for you. Therefore you can not see program output in turbo c++

If you want to wait output screen for you then you can use getch().

Program

#include <stdio.h>
#include <conio.h>
void main(){ 
 clrscr();
 printf("My first c program.");
 getch();
}

See Output

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