Inline functions are a feature in C++ that enhances performance. They reduce function call overhead by embedding the code directly. Declaring a function as inline suggests the compiler to optimize it. However, it’s a suggestion and not a command. The compiler may ignore it.
Here’s an example:
“`cpp
#include
using namespace std;
inline int square(int x) { return x * x; }
int main() {
cout << square(5) << endl; // Outputs 25
return 0;
}
```
In this code, the square function is declared inline. When called, the compiler replaces the call with the function code. This optimization can significantly improve performance in tight loops.
Despite their advantages, inline functions can increase code size. Excessive inlining may lead to larger binaries. Use them judiciously for optimal performance.