This program is in C. I have most of the problem done however cannot figure out

Question

This program is in C. I have most of the problem done however cannot figure out the last two errors that i am getting.

Any help is appericated. My code and errors are below.

Errors

My code

#include<stdio.h>
#include <string.h>
#include <ctype.h>

int GetNumOfNonWSCharacters(const char usrStr[]) {
int num = 0,i;
for (i = 0; i < strlen(usrStr); ++i) {
if ((usrStr[i] == ' ') || (usrStr[i] == ' ') || (usrStr[i] == ' ') || (usrStr[i] == '')) {
} else {
++num;
}
}
return num;
}

int GetNumOfWords(const char usrStr[]) {
int num = 1, i;
for ( i = 0; i < strlen(usrStr); ++i) {
if ((usrStr[i] == ' ') && (usrStr[i + 1] != ' ')) {
++num;
}

}
return num;

}

void FixCapitalization(char usrStr[]) {
usrStr[0] = toupper(usrStr[0]);
  
int i;

for (i = 0; i < strlen(usrStr); ++i) {
if ((usrStr[i] == '.') && (isalpha(usrStr[i + 3]) != 0)) {
usrStr[i + 3] = toupper(usrStr[i + 3]);
}

}

}

void ReplaceExclamation(char usrStr[]) {
int i = 0;
for (i = 0; i < strlen(usrStr); ++i) {
if ((usrStr[i] == '!')) {
usrStr[i] = '.';
}

}

}

void ShortenSpace(char usrStr[]) {
  
int i,j;

for (i = 0; i < strlen(usrStr); ++i) {
if ((usrStr[i] == ' ') && (usrStr[i + 1] == ' ')) {
for (j = i; j < strlen(usrStr); ++j) {
usrStr[j+1] = usrStr[j+2];
}
}
}

}

char PrintMenu(char usrStr[]) {
char menuOp = ' ';

printf("MENU ");
printf("c - Number of non-whitespace characters ");
printf("w - Number of words ");
printf("f - Fix capitalization ");
printf("r - Replace all !'s ");
printf("s - Shorten spaces ");
printf("q - Quit ");

while (menuOp != 'c' && menuOp != 'w' && menuOp != 'f' &&
menuOp != 'r' && menuOp != 's' && menuOp != 'o' &&
menuOp != 'q') {
printf("Choose an option: ");
scanf(" %c", &menuOp);
}

if (menuOp == 'c') {
printf("Number of non-whitespace characters: %d ", GetNumOfNonWSCharacters(usrStr));
menuOp = ' ';
} else if (menuOp == 'w') {
printf("Number of words: %d ", GetNumOfWords(usrStr));
menuOp = ' ';
} else if (menuOp == 'f') {
FixCapitalization(usrStr);
printf("Edited text: %s ", usrStr);
menuOp = ' ';
} else if (menuOp == 'r') {
ReplaceExclamation(usrStr);
printf("Edited text: %s ", usrStr);
menuOp = ' ';
} else if (menuOp == 's') {
ShortenSpace(usrStr);
printf("Edited text: %s ", usrStr);
menuOp = ' ';
}

return menuOp;
}

int main() {
char userString[256];
char menuChoice = ' ';

printf("Enter a sample text: ");
fgets(userString, 256, stdin);
printf(" ");

printf("You entered: %s ", userString);

while (menuChoice != 'q') {
menuChoice = PrintMenu(userString);
}

return 0;
}

Tests that FixCapitalization works correctly with "we'll continue our quest in space. there will be more shuttle flights and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space. nothing ends here; our hopes and our journeys continue!" Test feedback Fix Capitalization correctly edits the string 10. Compare output i want some water. he has some maybe he can give me some. nput f On Edited text: I want some water. h E has some maybe he can give me some. MENU c Number of non-whitespace characters Number of words Your output ends with f Fix capitalization r Replace a ll 's s Shorten spaces g Quit Choose an option: Maybe he can give me some Edited text: I want some water. He has some MENU c Number of non-whitespace characters Number of words Expected output ends f Fix capitalization r Replace a ll 's s Shorten spaces g Quit Choose an option:

Explanation / Answer

I wrote this complete code for you, so that if any module that troubles you, you can simply copy that from the given solution.

#include<stdio.h>
#define SIZE 200
void main() {
  
   char *string, printMenu(char *), option;
   string = malloc(sizeof(char)*SIZE);
   gets(string);
   do {
       option = printMenu(string);
  
   }while (option!='q' && option!='Q');
}

char printMenu(char* input) {
   int GetNumOfNonWSCharacters(const char*), GetNumOfWords(char*);
   void FixCapitalization(char *), ReplaceExclamation(char *), ShortenSpace(char *);
   char option;
   printf("MENU c - Number of non-whitespace characters w - Number of words f - Fix capitalization r - Replace all !'s s - Shorten spaces q - Quit Choose an option: ");//printing the menu
   option = getchar(); //input from standard input
   switch(option){
       case 'c':
           printf("Number of non WS chars: %d ",GetNumOfNonWSCharacters(input));
           break;
       case 'w':
           printf("number of words: %d ",GetNumOfWords(input));
           break;
       case 'f':
           FixCapitalization(input);
           printf("Edited string: %s ", input);
           break;
       case 'r':
           ReplaceExclamation(input);
           printf("Edited string: %s ", input);
           break;
       case 's':
           ShortenSpace(input);
           printf("Edited string: %s ", input);
           break;
   }
  
   return option;
}
  
int GetNumOfNonWSCharacters(const char* input) {
   int i, count = 0;
   for (i = 0; input[i]!=''; i++)
       if(input[i]!=' ' && input[i]!=' ' && input[i]!=' ' && input[i]!=' ') //checks for WS
           count ++;
   return count;
}

int GetNumOfWords(char *input) {
   int i, count = 1;
   for (i = 0; input[i]!=''; i++)
       if(input[i]==' ' || input[i]==' ') //Checks for blanks or tab
           count ++;   // and count them
   return count;
}

void FixCapitalization(char *input) {
   int i, flag = 1; //flag is set when a new sentence is starting
   for (i = 0; input[i]!=''; i++)
       if(input[i]==' ' || input[i]==' ') //ignore blank spaces
           continue;
       else if(input[i]=='.' || input[i]=='!' || input[i]=='?') //if end of sentence mark it
           flag = 1;
       else if (flag){
           flag = 0; //once we find the first charecter we know that end of sentence effect ends
           if (input[i] >='a' && input[i] <='z') //if it is end of sentence and char is lower
               input[i] -= 32; //change it to upper case
       }
}

void ReplaceExclamation(char *input){ //this method is very simple
   int i;
   for (i = 0; input[i]!=''; i++)
       if(input[i]=='!')
           input[i]='.';
}

void ShortenSpace(char *input){
   int i, j, flag = 0; //flag here marks a blank space is seen
   for (i = 0; input[i]!=''; i++)
       if (flag == 1 && (input[i]==' ' || input[i] == ' ')) { //if flag is set and we encounter another blank space we shift the arrray left
           for (j = i; input[j]!=''; j++)
               input[j] = input[j+1];
           i--; //since the array is shorten, we need to change value of i
       }   
       else if(input[i]==' ' || input[i]==' ')
           flag = 1; //mark blank space
       else
           flag = 0; //rset flag if it is not blank space
}

I have checked the code with few examples and hope there is no bug in the code.

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