WAP to find size of int,char,float,double floating data type

#include<stdio.h>
#include<conio.h>
int main ()
{
    int a;
    char b;
    float c;
    double d;
    printf("size of integer data type = %d byte\n", sizeof(a));
        printf("size of charactor data type = %d byte\n", sizeof(b));
            printf("size of floating data type  = %d byte\n", sizeof(c));
                printf("size of double floating data type  = %d byte\n", sizeof(d));
                getch();
}