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Declaring a structure with no members in C language
Problem
Can we declare a structure with no members in C, if yes what will be the size of that structure?
Solution
Yes, it is allowed in C programming language that we can declare a structure without any member and in that case the size of the structure with no members will be 0 (Zero). It will be a Zero size structure.
Example
#include <stdio.h>
//structure with no members
struct temp{
};
int main(){
//declaring structure variable
struct temp T;
printf("Size of T: %d
",sizeof(T));
return 0;
}Output
In this C program, we are declaring a structure named "temp" without declare any variable in it, so "temp" is a structure with no members.
Then, we are declaring its variable "T" (Structure variable) and printing occupied size by "T" using sizeof() operator, and the result is "0".
Size of T: 0
Updated on: 09-Mar-2021
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