c++ 动态内存动态数组

2024-09-01 20:18:53

动态内存-动态数组

习题12.23

//连接字符串到动态数组

char *c = new char[20]();

char a[] = "hello ";

char b[] = "world";

strcopy(c, a);

strcopy(c+strlen(a), b);

cout<<c<<endl;

// 连接string到动态数组

char *c = new char[20]();

string a = "hello ";

string b = "world";

size_t idx = 0;

for(const auto &v : a)

    c[idx++] = v;

for(const auto &v : b)

    c[idx++] = v;

cout<<v<<endl;

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