C++ try/catch
在C++编程中，使用try/catch语句执行异常处理。 C++ try块用于放置可能发生异常的代码。 catch块用于处理异常。
没有try/catch的C++示例
#include <iostream>
using namespace std;
float division(int x, int y) {
return (x/y);
}
int main () {
int i = 50;
int j = 0;
float k = 0;
k = division(i, j);
cout << k << endl;
return 0;
}
输出:
floating point exception (core dumped)
C++尝试/捕获示例
#include <iostream>
using namespace std;
float division(int x, int y) {
if( y == 0 ) {
throw "Attempted to divide by zero!";
}
return (x/y);
}
int main () {
int i = 25;
int j = 0;
float k = 0;
try {
k = division(i, j);
cout << k << endl;
}catch (const char* e) {
cerr << e << endl;
}
return 0;
}
输出:
Attempted to divide by zero!
