版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/liangzhao_jay/article/details/87785504
示例代码如下，
#include <iostream>
#include <string>
#include <algorithm>
using namespace std;
void transformLiteral()
{
string strA("[email protected]");
string strB("[email protected]");
transform(strA.begin(), strA.end(), strA.begin(), ::toupper);
transform(strB.begin(), strB.end(), strB.begin(), ::tolower);
}
int main()
{
transformLiteral();
return 0;
}