Struct in C++
The struct keyword in C++ is used to define a structure. A structure is a user-defined composite data type that allows us to combine data of different data types together under a single name.
Syntax to Define a Struct
struct StructName {
data_type member_name1;
data_type member_name2;
};
Here,
- StructName is the name of the structure.
- member_name are the members (variables or functions) of the structure.
Example
The below example demonstrates the use of structure in C++.
// C++ program to use struct in C++
#include <iostream>
using namespace std;
// define a struct MyStruct
struct MyStruct {
int num;
void increase() { num += 5; }
};
int main()
{
// create object of MyStruct
struct MyStruct obj;
// access variable using dot operator
obj.num = 5;
// access member function using dot operator
obj.increase();
// printing the value of num
cout << "Number is: " << obj.num;
}
Output
Number is: 10
Difference Between Struct and Typedef Struct in C++
In C++, the struct keyword is used to define a struct, whereas the typedef keyword is used for creating an alias(new name) for existing datatypes and user-defined datatypes like class, struct, and union to give them more meaningful names. In this article, we will learn the differences between a struct and a typedef struct in C++.
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