C++ Primer第四版习题--4.30

#include <iostream>
#include <cstring>

int main()
{
    const char *cp1 = "Hello!";
    const char *cp2 = "How are you.";
    size_t len = strlen(cp1) + strlen(cp2);
    char *result = new char[len];
    strcpy(result, cp1);
    strcat(result, cp2);
    while(len--)
    {
        std::cout << *result;
        ++result;
    }
    delete [] result;
    return 0;
}