mystring_main.c

#include

#include "mystring.h"

int main(int argc, char* args[]) {

setbuf(stdout, NULL);

char str[100] = " This Is a Test ";

printf("str:\"%s\" ", str);

printf("str_length(str):%d ", str_length(str));

printf("word_count(str):%d ", word_count(str));

trim(str);

lower_case(str);

printf("trim(str):\"%s\" ", str);

printf("str_length(trim(str)):%d ", str_length(str));

return 0;

}

Write C program mystring.h containing the headers of following string functions, and mystring.c containing the implementations of the functions. It is not allowed to use string library string.h 1. int str_length(char *s) computes and returns the number of characters of string passed by s (including space). 2. int word_count(char *s) computes and returns the number of words of string passed by s. 3. void lower_case (char *s) changes upper case to lower case of string passed by s. 4. void trim(char *s) removes unnecessary space characters in string passed by s. Use the provided main function mystring_main.c to test the above functions, the output should be exactly like the following. Public test gcc mystring.c mystring_main.c -o ql q1 str:" This Is a Test str_length(str):25 word_count (str): 4 trim(str):"this is a test" str_length(trim(str)):14 Download the mystring_main.c and save it the c:/cp264/a3 directory. mystring.h Add code comment each function #ifndef MYSTRING_H #define MYSTRING_H int str_length(char *); int word_count(char *); void lower_case(char *); void trim(char *); #endif mystring.c #include "mystring.h" #define NULLO int str_length(char *s) { // your implementation } int word_count (char *s) { // your implementation } void lower_case(char *s) { // your implementation } void trim(char *s) { // your implementation }