Data type programs 

float

int

double

char

float use for enter a decimals

int  simple data

char use for to enter a character

PROGRAM OF FLOAT VARIABLE

#include<iostream.h>

#include<stdio.h>

main()

{

clrscr();

float a,b,res;

a=9;

b=4;

res=a/b;

cout<<"RESULT;"<<res;

getch();

}