C++ Program to Find the Maximum Value using Macros

This C++ program computes the maximum value using macros. A macro is a #define preprocessor directive which give instruction to the compiler to preprocess the information before actual compilation starts. All subsequent occurrences of macro in the program will be replaced by replacement-text before the program is compiled. The macro-text should be written carefully using parentheses as several complications may occur while compiling.

Here is the source code of the C++ program computes the maximum value using macros. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.

```
/*
```

 * C++ Program to Find Maximum Value using Macros

```
 */
```
```
#include <iostream>
```
```
#define MAX(a, b) (a > b ? a : b)
```
```
 
```
```
int main()
```
```
{
```
```
    int a = 10, b = 20, c = -30;
```
```
 
```

    std::cout << "MAX(10, 20) = " << MAX(a, b)

```
              << std::endl;
```

    std::cout << "MAX(-30, 20) = " << MAX(c, b)

```
              << std::endl;
```
```
}
```

$ a.out
Maximum of 10 and 20 = 20
Maximum of -30 and 20 = 20

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