C++ 程序填空：统计最高最低成绩

#include using namespace std; void demo(){ float x, amax, amin; cin >> x; amax = x; amin = x; while(x >= 0){ if(x > amax) amax = x; if(x < amin) amin = x; cin >> x; } cout << '\namax = ' << amax << '\namin = ' << amin << endl; } int main(){ demo(); system("pause"); return 0; }