Sorts the array of strings by function call

#include <stdio.h>#include <string.h>#include <stdlib.h>#define LINE 3#define RANKvoidCharater_string (intNChar*ptr[]);//String OutputvoidAlphabet_list (intNChar*str[]);//sorted in ASCII alphabetical ordervoidString_length (intNChar*ptr[]);//Sort by string lengthvoidFirst_word_length (intNChar*ptr[]);//Sort by first word lengthintString_in (Char*PTR);//Take the first word character numbervoidQuit ();//Termination procedureintMainvoid){intI,j,num;CharArr[line][rank];Char*string[Line];printf("Please enter Charater string.\n"); for(i=0; i<line;i++) {gets (arr[i]);string[I]=arr[i]; } while(1)     {printf("Please choice number:\n");printf("1) Output string list 2) output string in ASCII order \ n");printf(3) Increment output by length 4) exit \ n by the first word length of the string 5));scanf("%d", &num);Switch(num) { Case 1: Charater_string (line,string); Break; Case 2: Alphabet_list (line,string); Break; Case 3: String_length (line,string); Break; Case 4: First_word_length (line,string); Break; Case 5: Quit (); Break;default: Break; }     }return 0;}voidCharater_string (intNChar*ptr[]) {intI=0; for(i=0; i<n;i++)puts(Ptr[i]);}voidAlphabet_list (intNChar*str[]) {intI,j;Char*temp; for(i=0; i<n-1; i++) { for(j=i+1; j<n;j++) {if(strcmp(Str[i],str[j]) >0) {temp= str[j];              Str[j]= Str[i];            str[i]= temp; }}} charater_string (N,STR);}voidString_length (intNChar*ptr[]) {intI,j;Char*temp; for(i=0; i<n-1; i++) { for(j=i+1; j<n;j++) {if((strlen(Ptr[i])-strlen(Ptr[j])) >0) {Temp=ptr[j];             Ptr[j]=ptr[i];            ptr[i]= temp; }}} charater_string (N,ptr);}voidFirst_word_length (intNChar*ptr[]) {intI,j;Char*temp; for(i=0; i<n-1; i++) { for(j=i+1; j<n;j++) {if((String_in (Ptr[i])-string_in (Ptr[j])) >0) {Temp=ptr[j];             Ptr[j]=ptr[i];            Ptr[i]=temp; }}} charater_string (N,ptr);}voidQuit () {Exit(1);}intString_in (Char*PTR) {intI=0; while(*PTR) {if(*ptr=="')returnI         i++;       *ptr++; }  }

Sorts the array of strings by function call