在这个程序中,用户被要求输入三个数字。
然后这个程序在用户输入的三个数字中找出最大的数字并用正确的信息显示出来。
该程序可以以多种方式使用。
示例 1: 使用 if 语句查找最大数
#include <iostream> using namespace std; int main() { float n1, n2, n3; cout << "Enter three numbers: "; cin >> n1 >> n2 >> n3; if(n1 >= n2 && n1 >= n3) cout << "Largest number: " << n1; if(n2 >= n1 && n2 >= n3) cout << "Largest number: " << n2; if(n3 >= n1 && n3 >= n2) cout << "Largest number: " << n3; return 0; }
输出
Enter three numbers: 2.3 8.3 -4.2 Largest number: 8.3
示例 2: 使用 if...else 语句查找最大数
#include <iostream> using namespace std; int main() { float n1, n2, n3; cout << "Enter three numbers: "; cin >> n1 >> n2 >> n3; if((n1 >= n2) && (n1 >= n3)) cout << "Largest number: " << n1; else if ((n2 >= n1) && (n2 >= n3)) cout << "Largest number: " << n2; else cout << "Largest number: " << n3; return 0; }
输出
Enter three numbers: 2.3 8.3 -4.2 Largest number: 8.3
示例 3: 使用嵌套 if...else 语句查找最大数
#include <iostream> using namespace std; int main() { float n1, n2, n3; cout << "Enter three numbers: "; cin >> n1 >> n2 >> n3; if (n1 >= n2) { if (n1 >= n3) cout << "Largest number: " << n1; else cout << "Largest number: " << n3; } else { if (n2 >= n3) cout << "Largest number: " << n2; else cout << "Largest number: " << n3; } return 0; }
输出
Enter three numbers: 2.3 8.3 -4.2 Largest number: 8.3