Backspaces and terminals. Left off on 1.5.4 Word Counting

ch_01/exercise_01-08/main.c

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+/*
+ *
+ * Exercise 1-8. Write a program to count blanks, tabs, and new lines.
+ *
+ * Author: Kun Deng
+ */
+
+#include <stdio.h>
+
+#define BLANK_SPACE 32
+#define TAB 9
+#define NEW_LINE 10
+#define EXIT_CONDITION 50 // ASCII value of 50 is the numerical 2 value
+
+
+int main()
+{
+    int blank_count = 0;
+    int tab_count = 0;
+    int new_line_count = 0;
+
+    printf ("Enter 2 to print the results of how many blanks, tabs, and new lines were entered\n");
+
+    for (int c = getchar(); c != EOF; c = getchar())
+    {
+        if (c == BLANK_SPACE)
+        {
+            ++blank_count;
+        }
+        else if (c == TAB)
+        {
+            ++tab_count;
+        }
+        else if (c == NEW_LINE)
+        {
+            ++new_line_count;
+        }
+        else if (c == EXIT_CONDITION)
+        {
+            break;
+        }
+
+        printf("ASCII value of %d is character %c\n", c, c);
+    }
+
+    printf("blank count: %d\n", blank_count);
+    printf("tab count: %d\n", tab_count);
+    printf("new line count: %d\n", new_line_count);
+
+    return 0;
+}

ch_01/exercise_01-09/main.c

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+/*
+ *
+ * Exercise 1-9. Write a program to copy its input to its output, replace each string of one or more blanks
+ * by a single blank
+ *
+ * Author: Kun Deng
+ */
+
+#include <stdio.h>
+
+#define BLANK_SPACE 32
+#define EXIT_CONDITION 50 // ASCII value of 50 is the numerical 2 value
+
+
+int main()
+{
+    int blank_count = 0;
+    int other = 0;
+
+    printf ("Enter 2 to escape\n");
+    printf ("Enter a string that contains multiple spaces in a row. ");
+    printf("The output will replace those spaces with a single space\n");
+
+    int previous_char = 0;
+
+    for (int c = getchar(); c != EOF; c = getchar())
+    {
+        if (c == EXIT_CONDITION)
+        {
+            break;
+        }
+
+        if ((c == BLANK_SPACE && c != previous_char) || c != BLANK_SPACE)
+        {
+            putchar(c);
+
+            if (c == BLANK_SPACE)
+            {
+                ++blank_count;
+            }
+
+            ++other;
+        }
+
+        previous_char = c;
+    }
+
+    printf("blank count: %d\n", blank_count);
+    printf("other count: %d\n", other);
+
+    return 0;
+}

ch_01/exercise_01-10/main.c

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+/*
+ *
+ * Exercise 1-10. Write a program to copy its input to its output, replacing each tab by \t,
+ * each backspace by \b, and each backslash by \\. This makes tabs and backspaces visible
+ * in an unambiguous way.
+ *
+ * Author: Kun Deng
+ */
+
+#include <stdio.h>
+
+#define EXIT_CONDITION 50 // ASCII value of 50 is the numerical 2 value
+
+int main()
+{
+    int blank_count = 0;
+    int tab_count = 0;
+    int new_line_count = 0;
+
+    printf("Each instance of a tab is replaced by \\t\n");
+    printf("Each instance of backspace is replaced by \\b\n");
+    printf("Each instance of backslash is replaced by \\\\\n");
+    printf("Enter 2 to escape\n");
+
+    int c = 0;
+
+    // Ctrl-H represents the backspace character
+    while ((c = getchar()) != EOF)
+    {
+        if (c == '\\')
+        {
+            printf("\\\\");
+        }
+        else if (c == '\t')
+        {
+            printf("\\t");
+        }
+        else if (c == '\b')
+        {
+            printf("\\b");
+        }
+        else if (c == EXIT_CONDITION)
+        {
+            break;
+        }
+    }
+
+    return 0;
+}