C Programming - Old Questions

9. Discuss any five string library functions.

Five string library functions are given below:

1. strlen(): It returns the number of characters in a string.

    syntax: strlen(string_name)

2. strcpy():  It copies the contents of source string to destination string.

    syntax: strcpy(destination_string, source_string)

3. strcat(): It concats or joins first string with second string. The result of the string is stored in first string.

    syntax: strcat(first_string, second_string)

4. strcmp(): It compares the first string with second string. If both strings are same, it returns 0.

    syntax:  strcmp(first_string, second_string)

5. strstr(): It is used to search whether a substring is present in the main string or not.

    syntax: strstr(mainsring, substring)