C++实现简单计算器：支持加减乘除运算

#include using namespace std; int main() { char s; float a, b; cin >> s >> a >> b; switch (s) { case '+': cout << a + b; break; case '-': cout << a - b; break; case '*': cout << a * b; break; case '/': cout << a / b; break; default: break; } return 0; }