C Program to find size of different data type variable and pointer

 #include<stdio.h>

int main()

{

int a=2, *p;

p=&a;

float b=3.24 , *q;

q=&b;

double c=3.27, *r;

r=&c;

char d='x' , *s;

printf("\nSize of char =%d \t Size of char pointer=%u\n", sizeof(s) , sizeof(*s));

printf("Size of int =%d    \t Size of int pointer=%u", sizeof(p) , sizeof(*p));

printf("\n Size of flot =%d\t Size of float pointer=%u", sizeof(q) , sizeof(*q));

printf("\n Size of double=%d\t Size of double pointer=%u\n", sizeof(r) , sizeof(*r));

return 0;

} 

Output:-

Size of char =8 Size of char pointer=1

Size of int =8    Size of int pointer=4

 Size of flot =8 Size of float pointer=4

 Size of double=8 Size of double pointer=8