Find the size of a datatype without using sizeof in c

#include <stdio.h> int main(){ int intType; float fType; double dType; char cType; printf("Size of int: %ld bytes\n",sizeof(intType)); printf("Size of float: %ld bytes\n",sizeof(fType)); printf("Size of double: %ld bytes\n",sizeof(dType)); printf("Size of char: %ld byte\n",sizeof(cType)); return 0; }