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C String Functions

There are many important string functions defined in “string.h” library.

No. Function Description
1) strlen(string_name) returns the length of string name.
2) strcpy(destination, source) copies the contents of source string to destination string.
3) strcat(first_string, second_string) concats or joins first string with second string. The result of the string is stored in first string.
4) strcmp(first_string, second_string) compares the first string with second string. If both strings are same, it returns 0.
5) strrev(string) returns reverse string.
6) strlwr(string) returns string characters in lowercase.
7) strupr(string) returns string characters in uppercase.
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