Whenever we declare a variable in C, compiler will allocate storage space in the computer’s memory. For example, if we declare a variable as “int”, 32-bit C compiler will allocate 4 bytes of memory space.

Below is the program in C which displays memory storage space allocated by C compiler as per data-type.Following data types are covered in the below C program:

• int
• float
• short int
• double
• signed int
• unsigned int
• long int
• long long int
• double
• long double
• signed short int
• signed long int
• unsigned short int
• unsigned long int
• unsigned long long int
• char
• signed char
• unsigned char

#include <stdio.h>
#include <stdlib.h>

int main()
{

    printf("\nSize of int is %d", sizeof(int));
    printf("\nSize of float is %d", sizeof(float));
    printf("\nSize of short int is %d", sizeof(short int));

    printf("\nSize of signed int is %d", sizeof(signed int));
    printf("\nSize of unsigned int is %d", sizeof(unsigned int));

    printf("\nSize of long int is %d", sizeof(long int));
    printf("\nSize of long long int is %d", sizeof(long long int));
    printf("\nSize of double is %d", sizeof(double));
    printf("\nSize of long double is %d", sizeof(long double));

    printf("\nSize of signed short int is %d", sizeof(signed short int));
    printf("\nSize of signed long int is %d", sizeof(signed long int));
    printf("\nSize of unsigned short int is %d", sizeof(unsigned short int));
    printf("\nSize of unsigned long int is %d", sizeof(unsigned long int));
    printf("\nSize of unsigned long long int is %d", sizeof(unsigned long long int));


    printf("\nSize of char is %d", sizeof(char));
    printf("\nSize of signed char is %d", sizeof(signed char));
    printf("\nSize of unsigned char is %d", sizeof(unsigned char));

    return 0;
}

Output (from 32-bit C compiler):