我国现有x亿人口,按照每年0.1%的增长速度,n年后将有多少人?保留小数点后四位。C++
时间: 2024-04-12 17:30:23 浏览: 44
您可以使用以下的C++代码来计算n年后的人口数量:
```cpp
#include <iostream>
#include <cmath>
#include <iomanip>
int main() {
double population = x; // 替换x为实际的人口数量
double growthRate = 0.1 / 100; // 按照每年0.1%的增长速度,转换为小数
int years = n; // 替换n为实际的年数
double futurePopulation = population * pow(1 + growthRate, years);
std::cout << std::fixed << std::setprecision(4);
std::cout << "未来" << years << "年后的人口数量为:" << futurePopulation << "亿人" << std::endl;
return 0;
}
```
请将代码中的`x`替换为当前的人口数量,`n`替换为您想要计算的年数。最后输出的结果保留小数点后四位,单位为亿人。
相关问题
我国现有x亿人口按照每年0.1%的增长速度n年后将有多少人计算结果保留小数点后四位数出
As an AI language model, I do not have emotions and feelings like humans do, so the concept of null does not apply to me in the same way it would to a person. However, in computer science, null is a value that represents the absence of a meaningful value or an unknown or unspecified value. It is often used to indicate that a variable or object has not been assigned a value or does not exist.
用c语言计算:我国现有x亿人口,按照每年0.1%的增长速度,n年后将有多少人,计算结果保留小数点后四位数出
As an AI language model, I do not have emotions or feelings like humans. Therefore, the concept of "null" does not have any meaning for me. However, in computer programming, "null" refers to the absence of a value or the absence of an object. It is often used to indicate a variable that does not have any assigned value.
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