C Programming Placeholders

Placeholders in C programming language

%c used for character
%d used for signed decimal integer
%i used for signed decimal integer
%e used for scientific notation[e]
%E used for scientific notation[E]
%f used for decimal floating point

%o used for unsigned octal
%s used for string of character
%u used for unsigned decimal integer
%x used for unsigned Hexadecimal (lower)
%X used for unsigned Hexadecimal (upper)
%p used for display a pointer

scanf() is a predefine function of stdio.h header file. It use to read data from user.

Program

#include <stdio.h>
#include <conio.h>

void main(){
 int a;
 clrscr();
 printf("Enter of a: ");
 scanf("%d",&a);  /* & is used before variable name when you want to read data*/
 printf("\n value of a = %d",a);
 getch();
}

See Output

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