Please help me program the two functions

Question

Write the code using C

1. Write a function that asks for the user's first, middle, and last names. The names will be entered by the user on a single line and will be stored in three different C-strings. The program should then store, in a fourth array, the name arranged in the following manner: the last name followed by a comma and a space, followed by the first name and a space, followed by the middle name. For example, if the user entered Carol Lynn Smith, it should store Smith, Carol Lynn in the fourth array. Display the contents of the fourth array on the screen. You can assume that each individual name will be no more than 20 characters. (remember to have space for the null terminator as well)
2. Write a function that asks for a password and then verifies that it meets the criteria below. If it doesn't meet the specifications, the program should display a specific error message telling the user why the password is invalid.

Criteria:

1. between 6 and 14 characters long
2. at least one uppercase and one lowercase character
3. at least 1 digit
4. at least one punctuation symbol

3. Combine the functions in a single driver program that checks that both functions work properly.

Answer 1

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <conio.h>

#define MAX_NAME_LENGTH (20)

#define PW_INVALID_SIZE (1)

#define PW_MISSING_UPPERCASE_LETTER (2)

#define PW_MISSING_LOWERCASE_LETTER (4)

#define PW_MISSING_DIGIT (8)

#define PW_MISSING_PUNCTUATION (16)

#define PUNCTUATION_CHARS ("?,.;!:")

/* prompts for a string value: returns the # of bytes and the data Buffer */

int PromptForInput ( char * promptMsg, char * responseBuff, char * titleStr )

{

printf("*******************************************\n");

if (titleStr!=NULL)

{

printf( "%s \n",titleStr);

printf("*******************************************\n");

}

if (promptMsg!=NULL)

{

printf(promptMsg);

}

printf(" :> ");

scanf("%s",responseBuff);

return(strlen(responseBuff));

}

int Names( char * firstName, char * lastName, char * middleName, char * nameBuff)

{

PromptForInput("Please input the first name",firstName,"FIRST NAME");

PromptForInput("Please input the last name",lastName,"LAST NAME");

PromptForInput("Please input the middle name",middleName,"MIDDLE NAME");

sprintf(nameBuff,"%s , %s %s",lastName,firstName,middleName);

printf(" The name is >%s< \n",nameBuff);

return( strlen(nameBuff));

}

int Password( char * pwBuff)

{

PromptForInput("Please input the password",pwBuff,"PASSWORD");

int iReturn = 0;

int uCaseFlag = 0;

int lCaseFlag = 0;

int digitFlag=0;

int punctFlag=0;

int iLoop;

char ch;

int pwLength = strlen(pwBuff);

for (iLoop=0; iLoop<pwLength; iLoop++)

{

ch = pwBuff[iLoop];

if ((ch>=65) && (ch<=90)) { uCaseFlag=1; }

if ((ch>=97) && (ch<=122)) { lCaseFlag=1; }

if ((ch>=48) && (ch<=57)) { digitFlag=1; }

punctFlag = (strchr(PUNCTUATION_CHARS,ch)!=NULL) ? 1 : 0;

}

if ((pwLength <6) || (pwLength>14))

{

iReturn -= PW_INVALID_SIZE;

}

if (uCaseFlag==0) { iReturn -= PW_MISSING_UPPERCASE_LETTER; }

if (lCaseFlag==0) { iReturn -= PW_MISSING_LOWERCASE_LETTER; }

if (digitFlag==0) { iReturn -= PW_MISSING_DIGIT; }

if (punctFlag==0) { iReturn -= PW_MISSING_PUNCTUATION; }

return(iReturn);

} /* Password */

int main()

{

char firstName[MAX_NAME_LENGTH+1];

char lastName[MAX_NAME_LENGTH+1];

char middleName[MAX_NAME_LENGTH+1];

char nameBuff[3*(MAX_NAME_LENGTH+1)];

char pwBuff[255];

Names(firstName,lastName,middleName,nameBuff);

printf(" First name >%s< \n",firstName);

printf(" Last name >%s< \n",lastName);

printf(" Middle name >%s< \n",middleName);

printf(" Name is >%s< \n",nameBuff);

int iReturn = Password(pwBuff);

printf(" password is >%s< \n",pwBuff);

if (iReturn==0)

{

printf(" Password is CORRECT !!! \n");

}

else

{

int X = abs(iReturn);

printf("The Password is Incorrect \n");

if (X / PW_MISSING_PUNCTUATION)

{

printf(" Password must contain one of the following punctuation symbols: %s \n",PUNCTUATION_CHARS);

X %= PW_MISSING_PUNCTUATION;

}

if (X / PW_MISSING_DIGIT)

{

printf(" Password must contain at least one digit \n");

X %= PW_MISSING_DIGIT;

}

if (X / PW_MISSING_LOWERCASE_LETTER)

{

printf(" Password must contain at least one lowercase letter \n");

X %= PW_MISSING_LOWERCASE_LETTER;

}

if (X / PW_MISSING_UPPERCASE_LETTER)

{

printf(" Password must contain at least one uppercase letter \n");

X%= PW_MISSING_UPPERCASE_LETTER;

}

if (X/PW_INVALID_SIZE)

{

printf(" Password must be between 6 and 14 characters \n");

}

} /* password validation */

printf("Press a key...");

while (!getch()) { }

return 0;

}