C Programming Questions

Q1. What is #include in C?

Also known as file inclusion directive.

#include adds code from a reserved header file to our code file before compiling our C programme.

getch() used to hold the screen. Getch stand for Get Character.

Header file conio.h defines it.

The void keyword indicates a function does not returns a value.

stdio.h is for standard input and output. It is a header file which imports different functions, variables, etc, to performs input output operations.

clrscr means clear screen. It is a function to clear previous oled outputs from console screen.

Console input output.

printf is used to print formatted text to the standard output stream.

In printf( ), f is used for formatted text.

The scanf function is used for reading input from the user or from a file and storing it in variables.

%d is a format specifier. For decimal integer.

#include <stdio.h> 
void main() { 
  char gender = 'm'; 
  printf("%c", gender); 
}

#include <stdio.h> 

void main() { 
  int age = 20; 
  printf("%d", age); 
 
}

#include <stdio.h> 

void main() { 
  char percentage = 96.75; 
  printf("%f", percentage); 
}

#include <stdio.h> 
void main() { 
  char name[] = "EasyExamNotes"; 
  printf("%s", name); 

}