#include #include

#pragma warning(disable : 4996) // compiler directive for Visual Studio only

// Read before you start: // You are given a partially complete program. Complete the functions in order for this program to work successfully. // All instructions are given above the required functions, please read them and follow them carefully. // You shoud not modify the function return types or parameters. // You can assume that all inputs are valid. Ex: If prompted for an integer, the user will input an integer. // You can use only the strlen() of strings.h library to check string length. Do not use any other string functions // because you are supposed to use pointers for this homework. // **** DO NOT use arrays to store or to index the characters in the string ****

// Global Macro Values. They are used to define the size of 2D array of characters #define NUM_STRINGS 4 #define STRING_LENGTH 50

// Forward Declarations void initializeStrings(char[NUM_STRINGS][STRING_LENGTH]); void printStrings(char[NUM_STRINGS][STRING_LENGTH]); void toUppercase(char[STRING_LENGTH]); void toLowercase(char[STRING_LENGTH]); void changeAllToUpperOrLower(char[NUM_STRINGS][STRING_LENGTH], char); void wordMatch(char strings[NUM_STRINGS][STRING_LENGTH], char input[STRING_LENGTH]); void concatStr(char[NUM_STRINGS][STRING_LENGTH], char[NUM_STRINGS * STRING_LENGTH]);

// Problem 1: initializeStrings (5 points) // Use pointer 'p' to traverse the 2D array of characters variable 'strings' (input from user in main() ) and set all characters in each // array to a null terminator so that there is a 4 row and 50 column 2D array full of null terminators. // The null terminator '\0' is used to denote the end of a string. void initializeStrings(char strings[NUM_STRINGS][STRING_LENGTH]) { char* p = &strings[0][0]; // enter code here

}

// Problem 2: printStrings (5 points) // Use pointer 'p' to traverse the 2D character array 'strings' and print each string. // See the example outputs provided in the word document. Each string should be printed on a new line. void printStrings(char strings[NUM_STRINGS][STRING_LENGTH]) { char* p = &strings[0][0]; // enter code here

}

// Problem 3: toUppercase() and toLowercase() (15 points) // Problem 3-1: toUppercase // Convert the string in the array 's' to an uppercase string. // Traverse the input using pointer 'p' and covert the character to an uppercase letter if it is lowercase. // You need to write down the code to check whether or not the character is lowercase. // HINT: Use a pointer to change the ASCII value of a character. // The ASCII value of 'a'= 97 and the ASCII value of 'A' = 65 so the difference between them is 32. void toUppercase(char s[STRING_LENGTH]) { char* p = &s[0]; // enter code here

}

// Problem 3-2: toLowercase // HINT : This should be very similar to toUppercase(). // Convert the string in the array 's' to an lowercase string. // Traverse the input using pointer 'p' and covert the character to a lowercase letter if it is uppercase. // You need to write down the code to check whether or not the character is uppercase. // HINT: Use a pointer to change the ASCII value of a character. // The ASCII value of 'a'= 97 and the ASCII value of 'A' = 65 so the difference between them is 32. void toLowercase(char s[STRING_LENGTH]) { char* p = &s[0]; // enter code here }

// Problem 4: changeAllToUpperOrLower (5 points) // Change all words in the array 'strings' to uppercase or lowercase based on the value of char variable 'set'. // If the value of char 'set' is 'u' or 'U', change all words to uppercase strings. // If the value of char 'set' is 'l' or 'L', change all words to lowercase strings. // No change, otherwise. // You may use toUppercase() and toLowercase() here. void changeAllToUpperOrLower(char strings[NUM_STRINGS][STRING_LENGTH], char set) { char* ptr = &strings[0][0]; // enter code here }

// Problem 5: wordMatch (10 points) // This function must be working as follows: // 1. Compare the strings in the 2D array with input string // 2. If one of them matches with input string, print "Match found" // 3. Else print "Match not found" // Example: strings array -> ["Hi", "Sun", "Devils"], input -> "Sun" => print "Match found" // Example: strings array -> ["Hi", "Sun", "Devils"], input -> "Hello" => print "Match not found" void wordMatch(char strings[NUM_STRINGS][STRING_LENGTH], char input[STRING_LENGTH]) { char* p = &strings[0][0]; char* ip = input; int flag = 0; // enter code here

}

// Problem 6: concatStr (10 points) // This function must be working as follows: // 1. Concatenate the string in the array 'strings' together in a sentence. // 2. Store the string to the array 'result'. // 3. Print the string in the array 'result'. // The sample output is shown in document // NOTE: This is the function partially containing what you have implemented so far. // Initialize the array 'result' first before you store a string to it. // You may declare and use more pointers if needed. void concatStr(char strings[NUM_STRINGS][STRING_LENGTH], char result[NUM_STRINGS * STRING_LENGTH]) { char* p_result = result; char* p_input = &strings[0][0]; // enter code here

}

// You should study and understand how main() works. // *** DO NOT modify it in any way *** int main() { char strings[NUM_STRINGS][STRING_LENGTH]; // will store four strings each with a max length of 34 int i, key; char input[STRING_LENGTH]; char result[NUM_STRINGS * STRING_LENGTH];

printf("CSE240 HW4: Pointers "); initializeStrings(strings);

for (i = 0; i < NUM_STRINGS; i++) { printf("Enter a string: "); // prompt for string fgets(input, sizeof(input), stdin); // store input string input[strlen(input) - 1] = '\0'; // convert trailing ' ' char to '\0' (null terminator) strcpy(strings[i], input); // copy input to 2D strings array }

printf(" Enter a string to find a match: "); // prompt for string fgets(input, sizeof(input), stdin); // store input string input[strlen(input) - 1] = '\0'; // convert trailing ' ' char to '\0' (null terminator)

// Word match function call wordMatch(strings, input);

// Concate all strings in array string to a sentence printf(" The concatenated string is: "); concatStr(strings, result);

// Convert all strings in array string to a particular case printf(" Change strings to a particular case: "); changeAllToUpperOrLower(strings, 'l'); printStrings(strings); getchar(); // flush out newline ' ' char

getchar(); // keep VS console open return 0; }

NEED HELP WITH PROBLEM 5 AND PROBLEM 6