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整数读入

可读入正负数

#include <iostream> #include <cstdio> #include <cstring> #include <algorithm> using namespace std; inline int read(){ int s = 0, w = 1; char c = getchar(); while (c < '0' || c > '9'){ if (c == '-') w = -1; c = getchar(); } while (c >= '0' && c <= '9') s = s * 10 + c - '0', c = getchar(); return s*w; } int main(){ cout << read() << endl; return 0; }