C++ String Function

C String function supports all the string functions in C++.

There are commonly used string functions in C++. They are

• strcat(): it concatenates str2 at the end of str1.
• strcmp(): it returns 0 if str1 is same as str2.
• strcpy(): it copies str2 into str1.
• strlen(): it gives the length of str1.
• strncpy(): it copies given the number of characters of one string to another.
• strchr(): it returns the pointer to the first occurence of char in str1.
• strstr(): it returns the pointer to the first occurence of str2 in str1.

Example:

#include <iostream>   
#include <cstring> 
using namespace std;

int main () {
    char str1[30] = "Welcome to";
    char str2[30] = " Programtpoint";
    char str3[50];
    /* concatenates str1 and str2 */
    strcat( str1, str2);
	cout << "String concatenate str1 & str2: " << str1 << endl;
    /* copy str1 into str3 */
    strcpy( str3, str1);
    cout << "String copy from str1 to str3: " << str3 ;
    return 0;

}