What is the difference between try-catch and if statements in C++?

What is the difference between try-catch and if statements in C++?

In C++, try-catch blocks are used for exception handling, while if statements are for conditional checks. Try-catch can handle errors that occur during runtime, whereas if statements evaluate conditions before executing code.

Can you give me an example of using try-catch?

Sure! Here's a simple example:

try {
    int x = 10;
    int y = 0;
    if (y == 0) throw std::runtime_error("Division by zero");
    int z = x / y;
} catch (const std::runtime_error& e) {
    std::cout << e.what() << std::endl;
}
``` This will catch the division by zero error.

What about using if statements for error checking?

You can use if statements to check conditions before performing operations. For example:

int x = 10;
int y = 0;
if (y != 0) {
    int z = x / y;
} else {
    std::cout << "Cannot divide by zero" << std::endl;
}
``` This prevents the error from occurring.

When should I use try-catch instead of if?

Use try-catch when dealing with operations that can throw exceptions, like file handling or memory allocation. If statements are better for simple condition checks.