C++ Program to Find Size of Primitive Data Types

This C++ Program which prints size of primitive datatypes. The program uses a library function sizeof( ) to print the size of the respective datatypes. The output streams are manipulated using the library functions setw( ) and setfill( ) defined in the header ‘iomanip’.

Here is source code of the C++ program which prints size of primitive datatypes. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.

```
/*
```

 * C++ Program to Print Size of Primitive Datatypes

```
 */
```
```
 
```
```
#include<iostream>
```
```
#include<iomanip>
```
```
using namespace std;
```
```
 
```
```
int main()
```
```
{
```
```
    char c;
```
```
    int i;
```
```
    long l;
```
```
    float f;
```
```
    double d;
```
```
 
```

    cout << "Type : " << " Size" << endl;

    cout << "char " << setw(5) << setfill(' ')

```
         << sizeof(c) << endl;
```

    cout << "integer " << setw(2) << setfill(' ')

```
         << sizeof(i) << endl;
```

    cout << "long " << setw(5) << setfill(' ')

```
         << sizeof(l) << endl;
```

    cout << "float " << setw(4) << setfill(' ')

```
         << sizeof(f) << endl;
```

    cout << "double " << setw(3) << setfill(' ')

```
         << sizeof(d) << endl;
```
```
}
```

$ g++ main.cpp
$ ./a.out
Type :  Size
char     1
integer  4
long     8
float    4
double   8

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