c++c++(2)再编写一个子函数实现月份按字符串顺序排列，并将排序结果进行输出，其程序结构如下： #include <iostream> using namespace std; void DispMonths(char p[][30]) { … //打印12个月份 } void SortStrings(char p[][30], int n) { … } int main() { //months的定义及用字符串初始化的过程 char months[12][30]={"January","February",…}; cout<<"排序前:"<<endl; DispMonths(months); SortStrings(months，12); cout<<endl<<"排序后:"<<endl; DispMonths(months); return 0; }

以下是实现月份按字符串顺序排列的代码：

#include <iostream>
#include <cstring>
using namespace std;

void DispMonths(char p[][30]) {
    for(int i=0; i<12; i++) {
        cout << p[i] << endl;
    }
}

void SortStrings(char p[][30], int n) {
    char temp[30];
    for(int i=0; i<n-1; i++) {
        for(int j=i+1; j<n; j++) {
            if(strcmp(p[i], p[j]) > 0) {
                strcpy(temp, p[i]);
                strcpy(p[i], p[j]);
                strcpy(p[j], temp);
            }
        }
    }
}

int main() {
    char months[12][30] = {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};
    cout << "排序前:" << endl;
    DispMonths(months);
    SortStrings(months, 12);
    cout << "排序后:" << endl;
    DispMonths(months);
    return 0;
}

程序中，我们使用了C++标准库中的`strcmp()`函数来比较月份字符串大小，并且使用了`strcpy()`函数来交换两个月份字符串的位置。最终的输出结果如下：

排序前:
January
February
March
April
May
June
July
August
September
October
November
December
排序后:
April
August
December
February
January
July
June
March
May
November
October
September