How to Convert a C String to a Character Array?

Converting Strings to Character Arrays in C

When working with strings in C , you may encounter scenarios where converting a string to a character array is necessary. However, unlike converting to character pointers (char*), you aim to directly convert to a fixed-size character array (char[]).

To achieve this conversion, consider the following methods:

Method 1: Using strcpy and c_str()

string temp = "cat";
char tab2[1024];
strcpy(tab2, temp.c_str());

This method utilizes the strcpy function to copy the string into the character array. c_str() converts the string to a null-terminated character array.

Method 2: Using strncpy and c_str()

For increased safety, you can use strncpy to ensure no buffer overflows occur:

string temp = "cat";
char tab2[1024];
strncpy(tab2, temp.c_str(), sizeof(tab2));
tab2[sizeof(tab2) - 1] = 0;

strncpy copies a specified number of characters into the array and sets the last character to null.

Method 3: Using New and c_str()

string temp = "cat";
char *tab2 = new char [temp.length()+1];
strcpy(tab2, temp.c_str());

This method dynamically allocates memory for the character array and then uses strcpy for copying.

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