编写题解 1015: [编程入门]求和训练

解题思路:

注意事项:

参考代码:

import java.util.Scanner;

public class Main{

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

int a = scanner.nextInt();

int b = scanner.nextInt();

float c = scanner.nextFloat();

int sum1 = 0;

for (int i = 0; i <= a; i++) {

sum1 += i;

}

int sum2 = 0;

for (int i = 1; i <= b; i++) {

sum2 += (i * i);

}

float sum3 = 0;

for (float i = 1; i <= c; i++) {

sum3 += (1 / i);

}

System.out.printf("%.2f", sum1 + sum2 + sum3);

}

}