try yourself |run program

#include <stdio.h> 
#include <conio.h> 
void main(){ 
 float a; 
 clrscr(); 
 printf("Enter value of a: ");
 scanf("%f",&a);/*  %.2f is used to print two decimal places. */
 printf("\n value of a = %.2f",a);
 getch();
}

Program Output

Enter value of a: 212.4212 
value of a = 212.42