Finished 2.6. Start 2.7 Type Conversions

ch_02/exercise_02-02/main.c

@@ -0,0 +1,68 @@
+/*
+ *
+ *
+ * for (i=0; i < lim-1 && (c=getchar()) != '\n' && c ~= EOF; ++i)
+ *     s[i] = c;
+ *
+ * Exercise 2-1. Write a loop equivalent to the for loop above without using && or ||
+ *
+ * Author: Kun Deng
+ */
+
+#include <stdio.h>
+
+
+
+const int LIM = 10;
+
+int is_i_less_than_lim(int i)
+{
+    // Results in 1 if true and 0 if not
+    int result = i < LIM -1;
+
+    // printf("is_i_less_than_lim(%d, %d) function result is %d\n", i, LIM, result);
+
+    return result;
+}
+
+int is_c_not_new_line(char *c)
+{
+    *c = getchar();
+    // Results in 1 if true and 0 if not
+    int result = (*c != '\n');
+
+    // printf("is_c_not_new_line(%c) function result is %d\n", *c, result);
+
+    return result;
+}
+
+int is_c_end_of_file(char c)
+{
+    // Results in 1 if true and 0 if not
+    int result = c != EOF;
+
+    // printf("is_c_end_of_file(%c) function result is %d\n", c, result);
+
+    return result;
+}
+
+int main()
+{
+    char c;
+    char s[LIM];
+    int i;
+
+    printf("Enter characters\n\n");
+
+    // The result of the functions are compared to each other. If any are not true then the loop will
+    // be terminated
+    for (i = 0; is_i_less_than_lim(i) == is_c_not_new_line(&c) == is_c_end_of_file(c); ++i)
+        s[i] = c;
+
+    s[i] = '\0';
+
+    printf("s is %s\n", s);
+
+
+    return 0;
+}