Error handling in C++ -

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how make cin statement accepts integers?

i don't think can force std::cin refuse accept non-integral input in cases. can write:

std::string s; std::cin >> s;

since string doesn't care format of input. however, if want test whether reading integer succeeded can use fail() method:

int i; std::cin >> i; if (std::cin.fail()) {    std::cerr << "input not integer!\n"; }

alternatively, can test cin object itself, equivalent.

int i; if (std::cin >> i) {    // use input } else {    std::cerr << "input not integer!\n"; }

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