输入65 68时,输出的答案是否可能有两种:55571.632449349847
55571.632449349854
#include <iostream> #include <cmath> using namespace std; typedef long double ld; int main() { int n = 65, m = 68; int r = n + m; // 输出 r 的值 cout << "r: " << r << endl; // 计算并输出结果 ld s1 = r * r * M_PI; ld s2 = r * M_PI * r; printf("%.10Lf\n", s1); printf("%.10Lf\n", s2); return 0; }
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