An operating system is a computer program that allows a user to perform a variety of tasks on a computer. Billy is currently working on writing his own operating system, but needs some way of displaying output to the screen. The output screen is a rectangular grid, with each cell containing some text. To model this, he has created a two dimensional array of struct screen_cell. This array is called screen. One of the cells in the strcture will have the start_marker as 1. struct screen_cell { char character; int start_marker; }; Your job is to complete the given write_text_to_screen function in the starter code: // Your write_text_to_screen code here! void write_text_to_screen(struct screen_cell screen [BUFFER_HEIGHT] [BUFFER_WIDTH], char *text) { } To do this, you will need to loop through every struct screen_cell in the screen array, until you have found the cell where the start_marker field is 1. This is where you should starting writing your text from. By text, we mean the text string passed into the write_text_to_screen function. The text should overflow to the next row in the screen array if it is longer than the screen width (this is #defined as BUFFER_WIDTH for you). If there is too much text to fit on the screen, the program should write as much as it can fit, then stop. I.e - your program should not try and write past the last row and the last column. You will need to go through every character in the text_string, and set the corresponding cell's character field to that character. NOTE: For example - if you are given the text "Hi" - and you have looped through the array and found that the struct at position 1 1 has start_marker as 1. Then, you should set the character field in the struct at 1 1 (since, that is where we need to start writing text) to 'H', and the character field in the struct at 1 2 (the next column) to 'i'. Examples $ ./exam_q5 2 2 Enter Text: Shrey Rocks | Shrey Rocks $ ./exam_q5 00 Enter Text: Hello world this is a very long string that should overflow | Hello world this| | is a very long | Istring that shoul |ld overflow | | |Provided code#include #include #include #define BUFFER_WIDTH 16#define BUFFER_HEIGHT 5#define MAX_STRING_LEN 100struct screen_cell {char character;int start_marker;};// Your write_text_to_screen code here!void write_text_to_screen(struct screen_cell screen[BUFFER_HEIGHT][BUFFER_WIDTH], char *text) {}///////////// PROVIDED CODE ///////////////// DO NOT MODIFY THESE FUNCTIONSstatic void init_screen(struct screen_cell screen[BUFFER_HEIGHT][BUFFER_WIDTH], int starting_row, int starting_col);static void print_screen(struct screen_cell screen[BUFFER_HEIGHT][BUFFER_WIDTH]);static void trim_newline(char *string);// we may use a different main function for marking// please ensure your write_text_to_screen function is implemented.// DO NOT MODIFY THIS MAIN FUNCTIONint main(int argc, char *argv[]){if ( argc < 3 ) {fprintf(stderr, "ERROR: Not enough arguments!
");fprintf(stderr, "Usage ./exam_q5 start_row start_col
");fprintf(stderr, "You do not have to handle this case
");exit(1);return 1;}int start_row = atoi(argv[1]);int start_col = atoi(argv[2]);if (start_row >= BUFFER_HEIGHT || start_row < 0 ||start_col >= BUFFER_WIDTH || start_row < 0) {fprintf(stderr, "ERROR: Start row and column are too big or too small!
");fprintf(stderr, "The max row is 4, and the max column is 15
");fprintf(stderr, "You do not have to handle this case
");exit(1);return 1;}struct screen_cell screen[BUFFER_HEIGHT][BUFFER_WIDTH];init_screen(screen, start_row, start_col);printf("Enter Text: ");char text[MAX_STRING_LEN], *result;if ((result = fgets(text, MAX_STRING_LEN, stdin)) != NULL) {trim_newline(text);write_text_to_screen(screen, text);print_screen(screen);} else {fprintf(stderr, "ERROR: No text provided!
");fprintf(stderr, "You do not have to handle this case
");exit(1);return 1;}return 0;}void trim_newline(char *str) {int len = strlen(str);if (str[len - 1] == '
') {str[len - 1] = '\0';}}void init_screen (struct screen_cell screen[BUFFER_HEIGHT][BUFFER_WIDTH],int starting_row, int starting_col){for (int row = 0; row < BUFFER_HEIGHT; row++) {for (int col = 0; col < BUFFER_WIDTH; col++) {screen[row][col].character = ' ';screen[row][col].start_marker = 0;if (row == starting_row && col == starting_col) {screen[row][col].start_marker = 1;}}}}void print_screen(struct screen_cell screen[BUFFER_HEIGHT][BUFFER_WIDTH]) {printf("
");// top borderfor (int i = 0; i < BUFFER_WIDTH + 2; i++) {printf("-");}printf("
");for (int row = 0; row < BUFFER_HEIGHT; row++) {// left borderprintf("|");for (int col = 0; col < BUFFER_WIDTH; col++) {printf("%c", screen[row][col].character);}// right borderprintf("|");printf("
");}// bottom borderfor (int i = 0; i < BUFFER_WIDTH + 2; i++) {printf("-");}printf("
");}

Question

An operating system is a computer program that allows a user to perform a variety of tasks on a computer. Billy is currently working on writing his own operating system, but needs some way of displaying output to the screen. The output screen is a rectangular grid, with each cell containing some text. To model this, he has created a two dimensional array of struct screen_cell. This array is called screen. One of the cells in the strcture will have the start_marker as 1. struct screen_cell { char character; int start_marker; }; Your job is to complete the given write_text_to_screen function in the starter code: // Your write_text_to_screen code here! void write_text_to_screen(struct screen_cell screen [BUFFER_HEIGHT] [BUFFER_WIDTH], char *text) { } To do this, you will need to loop through every struct screen_cell in the screen array, until you have found the cell where the start_marker field is 1. This is where you should starting writing your text from. By text, we mean the text string passed into the write_text_to_screen function. The text should overflow to the next row in the screen array if it is longer than the screen width (this is #defined as BUFFER_WIDTH for you). If there is too much text to fit on the screen, the program should write as much as it can fit, then stop. I.e - your program should not try and write past the last row and the last column. You will need to go through every character in the text_string, and set the corresponding cell's character field to that character. NOTE: For example - if you are given the text "Hi" - and you have looped through the array and found that the struct at position 1 1 has start_marker as 1. Then, you should set the character field in the struct at 1 1 (since, that is where we need to start writing text) to 'H', and the character field in the struct at 1 2 (the next column) to 'i'. Examples $ ./exam_q5 2 2 Enter Text: Shrey Rocks | Shrey Rocks $ ./exam_q5 00 Enter Text: Hello world this is a very long string that should overflow | Hello world this| | is a very long | Istring that shoul |ld overflow | | |Provided code#include #include #include #define BUFFER_WIDTH 16#define BUFFER_HEIGHT 5#define MAX_STRING_LEN 100struct screen_cell {char character;int start_marker;};// Your write_text_to_screen code here!void write_text_to_screen(struct screen_cell screen[BUFFER_HEIGHT][BUFFER_WIDTH], char *text) {}///////////// PROVIDED CODE ///////////////// DO NOT MODIFY THESE FUNCTIONSstatic void init_screen(struct screen_cell screen[BUFFER_HEIGHT][BUFFER_WIDTH], int starting_row, int starting_col);static void print_screen(struct screen_cell screen[BUFFER_HEIGHT][BUFFER_WIDTH]);static void trim_newline(char *string);// we may use a different main function for marking// please ensure your write_text_to_screen function is implemented.// DO NOT MODIFY THIS MAIN FUNCTIONint main(int argc, char *argv[]){if ( argc &lt; 3 ) {fprintf(stderr, "ERROR: Not enough arguments!
");fprintf(stderr, "Usage ./exam_q5 start_row start_col
");fprintf(stderr, "You do not have to handle this case
");exit(1);return 1;}int start_row = atoi(argv[1]);int start_col = atoi(argv[2]);if (start_row &gt;= BUFFER_HEIGHT || start_row &lt; 0 ||start_col &gt;= BUFFER_WIDTH || start_row &lt; 0) {fprintf(stderr, "ERROR: Start row and column are too big or too small!
");fprintf(stderr, "The max row is 4, and the max column is 15
");fprintf(stderr, "You do not have to handle this case
");exit(1);return 1;}struct screen_cell screen[BUFFER_HEIGHT][BUFFER_WIDTH];init_screen(screen, start_row, start_col);printf("Enter Text: ");char text[MAX_STRING_LEN], *result;if ((result = fgets(text, MAX_STRING_LEN, stdin)) != NULL) {trim_newline(text);write_text_to_screen(screen, text);print_screen(screen);} else {fprintf(stderr, "ERROR: No text provided!
");fprintf(stderr, "You do not have to handle this case
");exit(1);return 1;}return 0;}void trim_newline(char *str) {int len = strlen(str);if (str[len - 1] == '
') {str[len - 1] = '\0';}}void init_screen (struct screen_cell screen[BUFFER_HEIGHT][BUFFER_WIDTH],int starting_row, int starting_col){for (int row = 0; row &lt; BUFFER_HEIGHT; row++) {for (int col = 0; col &lt; BUFFER_WIDTH; col++) {screen[row][col].character = ' ';screen[row][col].start_marker = 0;if (row == starting_row &amp;&amp; col == starting_col) {screen[row][col].start_marker = 1;}}}}void print_screen(struct screen_cell screen[BUFFER_HEIGHT][BUFFER_WIDTH]) {printf("
");// top borderfor (int i = 0; i &lt; BUFFER_WIDTH + 2; i++) {printf("-");}printf("
");for (int row = 0; row &lt; BUFFER_HEIGHT; row++) {// left borderprintf("|");for (int col = 0; col &lt; BUFFER_WIDTH; col++) {printf("%c", screen[row][col].character);}// right borderprintf("|");printf("
");}// bottom borderfor (int i = 0; i &lt; BUFFER_WIDTH + 2; i++) {printf("-");}printf("
");}

ron.bruen · Accepted Answer

To complete the `write_text_to_screen` function, you need to loop through each `struct screen_cell` in the `screen` array until you find the cell where the `start_marker` field is 1.Here's the implementation of the `write_text_to_screen` function:void write_text_to_screen(struct screen_cell screen[BUFFER_HEIGHT][BUFFER_WIDTH], char *text) { int row = 0; int col = 0; int text_index = 0; // Find the cell with start_marker set to 1 for (int i = 0; i &lt; BUFFER_HEIGHT; i++) { for (int j = 0; j &lt; BUFFER_WIDTH; j++) { if (screen[i][j].start_marker == 1) { row = i; col = j; break; } } } // Write text to screen cells while (text[text_index] != '\0' &amp;&amp; row &lt; BUFFER_HEIGHT) { screen[row][col].character = text[text_index]; col++; text_index++; // Check if the text overflows to the next row if (col &gt;= BUFFER_WIDTH) { col = 0; row++; } }}```In this implementation, we start by initializing the `row` and `col` variables to the position of the cell with `start_marker` set to 1. Then, we iterate over the `text` string and write each character to the corresponding cell in the `screen` array. After writing a character, we increment the column index (`col`) and the text index (`text_index`). If the column index reaches the buffer width (`BUFFER_WIDTH`), we reset it to 0 and move to the next row by incrementing the row index (`row`).The loop continues until we reach the end of the `text` string or until we run out of rows in the `screen` array. This ensures that the program stops writing if there is not enough space on the screen to accommodate the entire text.Finally, you can call the `print_screen` function to display the updated screen with the written text.Learn more about Array here: brainly.com/question/13261246#SPJ11

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