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What is the difference between an int and a long in C++?
int
The datatype int is used to store the integer values. It could be signed or unsigned. The datatype int is of 32-bit or 4 bytes. It requires less memory area than long to store a value. The keyword “int” is used to declare an integer variable.
The following is the syntax of int datatype.
int variable_name;
Here,
variable_name − The name of variable given by user.
The following is an example of int datatype.
Example
#include <iostream>
using namespace std;
int main() {
int a = 8;
int b = 10;
int c = a+b;
cout << "The value of c : " << c;
return 0;
}Output
The value of c : 18
long
The datatype long is used to store the long integer values. It could be signed or unsigned. The datatype long is of 64-bit or 8 bytes. It requires more memory area than int to store the value. The keyword “long” is used to declare a long integer variable.
The following is the syntax of long datatype.
long variable_name;
Here,
variable_name − The name of variable given by user.
The following is an example of long datatype.
Example
#include <iostream>
using namespace std;
int main() {
int a = 8;
long b = 28;
long c = long(a+b);
cout << "The value of c : " << c;
return 0;
}Output
The value of c : 36
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