如何用C语言编写程序来实现以下功能:首先接收用户输入一个不超过10的正整数n,接着读入这n个整数,然后计算这些数的平均值并取整,最后找到与该平均值之差的平方最小的数(假设这个数唯一),并展示出来?
时间: 2024-12-14 15:18:45 浏览: 6
c语言编写程序实现两个超长正整数(每个最长80位数字)的减法运算
在C语言中,你可以按照以下步骤编写程序来实现所需的功能:
1. **声明并接收用户输入**:
```c
#include <stdio.h>
int main() {
int n;
printf("请输入一个不超过10的正整数n: ");
scanf("%d", &n);
}
```
2. **检查输入是否有效并处理数组**:
```c
if (n > 10) {
printf("输入错误,请重新输入一个小于10的正整数.\n");
return 0;
}
int numbers[n];
for (int i = 0; i < n; i++) {
printf("请输入第 %d 个整数: ", i+1);
scanf("%d", &numbers[i]);
}
```
3. **计算平均值并取整**:
```c
float sum = 0;
for (int i = 0; i < n; i++) {
sum += numbers[i];
}
float average = (float)sum / n;
```
4. **找到与平均值之差的平方最小的数**:
```c
int min_square_difference = INT_MAX;
int min_number;
for (int i = 0; i < n; i++) {
int diff = numbers[i] - average * n; // 平均值乘以n是为了消除小数部分影响
int square_diff = diff * diff;
if (square_diff < min_square_difference) {
min_square_difference = square_diff;
min_number = numbers[i];
}
}
```
5. **显示结果**:
```c
printf("与平均值之差的平方最小的数是: %d\n", min_number);
return 0;
}
```
完整代码示例:
```c
#include <stdio.h>
int main() {
int n;
printf("请输入一个不超过10的正整数n: ");
scanf("%d", &n);
if (n > 10) {
printf("输入错误,请重新输入一个小于10的正整数.\n");
return 0;
}
int numbers[n];
for (int i = 0; i < n; i++) {
printf("请输入第 %d 个整数: ", i + 1);
scanf("%d", &numbers[i]);
}
float sum = 0;
for (int i = 0; i < n; i++) {
sum += numbers[i];
}
float average = (float)sum / n;
int min_square_difference = INT_MAX;
int min_number;
for (int i = 0; i < n; i++) {
int diff = numbers[i] - average * n;
int square_diff = diff * diff;
if (square_diff < min_square_difference) {
min_square_difference = square_diff;
min_number = numbers[i];
}
}
printf("与平均值之差的平方最小的数是: %d\n", min_number);
return 0;
}
```
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