Added files from the first CIS 452 lab.

extra-credit.c

@@ -0,0 +1,42 @@
+#include <termios.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define TERMINAL_FD 0
+#define MAX_CHARS 50
+#define LOWERCASE_W 119
+
+int main()
+{
+    // Declaring the variables we'll be using.
+    struct termios old, new;
+    char *input;
+
+    // Grabbing terminal settings.
+    tcgetattr(TERMINAL_FD, &old);
+    new = old;
+
+    // Getting memory from the heap for the input string.
+    input = malloc(sizeof(char) * MAX_CHARS);
+
+    /*
+	 * Setting erase key to w. I figured out how to do
+	 * this using the man page given here:
+	 * http://man7.org/linux/man-pages/man3/termios.3.html/ 
+	 */
+    new.c_cc[VERASE] = LOWERCASE_W;
+    tcsetattr(TERMINAL_FD, TCSANOW, &new);
+
+    // Pressing the w key erases input!
+    printf("Press the w key to erase: ");
+    fgets(input, MAX_CHARS, stdin);
+    printf("\nYou entered: %s", input);
+
+    // Reverting settings.
+    tcsetattr(TERMINAL_FD, TCSANOW, &old);
+
+    // Freeing memory allocated.
+    free(input);
+
+    return 0;
+}

programming-assignment.c

@@ -0,0 +1,48 @@
+#include <termios.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define TERMINAL_FD 0
+#define MAX_CHARS 50
+
+int main()
+{
+    // Declaring the variables we'll be using.
+    struct termios old, new;
+    char *input;
+
+    // Grabbing terminal settings.
+    tcgetattr(TERMINAL_FD, &old);
+    new = old;
+
+    // Getting memory from the heap for the input string.
+    input = malloc(sizeof(char) * MAX_CHARS);
+
+    /*
+	 * Turning off echo. I figured out how to do
+	 * this using the man page given here:
+	 * http://man7.org/linux/man-pages/man3/termios.3.html/ 
+	 */
+    printf("Disabling echo.\n");
+    new.c_lflag = new.c_lflag & ~ECHO;
+    tcsetattr(TERMINAL_FD, TCSANOW, &new);
+
+    // Entering phrase without echo!
+    printf("Enter secret word/phrase: ");
+    fgets(input, MAX_CHARS, stdin);
+    printf("\nYou entered: %s\n", input);
+
+    // Reverting settings.
+    printf("Default behavior restored.\n");
+    tcsetattr(TERMINAL_FD, TCSANOW, &old);
+
+    // Entering phrase with echo.
+    printf("Enter visible word/phrase: ");
+    fgets(input, MAX_CHARS, stdin);
+    printf("You entered: %s", input);
+
+    // Freeing memory allocated.
+    free(input);
+
+    return 0;
+}