What is the C++string operation corresponding to the C string function

This article introduces you what is the corresponding C++string operation of C string function, the content is very detailed, interested friends can refer to, hope to be helpful to you.

String is a standard class in STL. It is used to using pointers to manipulate char * strings in C, but it is not very suitable at first. The main reason is that no suitable C++ replacement method has been found for functions in string.h. Therefore, the function substitution in commonly used sring.h is explained as follows:

Strcpy: str.substr ()

Strncpy: str.substr (pos, n)

Strcmp: = =

Strncmp: = =

Strstr: str.find ()

Strcat: str.append ()

Strchr: str.find ()

Strtok: no corresponding function, use str.find () to wrap a str.split ()

The ultimate trick:

Conversion between char * and string

Convert char to string: string str (char)

Convert string to char *: str.c_string ()

Extended Learning:

String (substr () function)

# include#includeusing namespace std;int main () {string str; cin > > str; cout