Chapter 1, exercises 1.1, 1.2, and the beginning of 1.3

1-1/hello.c

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+#include <stdio.h>
+
+int main ()
+{
+  printf("Hello world!\n");
+  return 0;
+}

1-1/hello1-2.c

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+#include <stdio.h>
+
+int main ()
+{
+  printf("Hello world!\q");
+  return 0;
+}

1-2/temperature.c

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+/*
+ * Print a table of Fahrenheit temperatures and their Celsius equivalents.
+ * From K&R 2nd ed., 1-2
+*/
+
+#include <stdio.h>
+
+int main (void) {
+  int fahr, celsius;
+  int lower, upper, step;
+
+  lower = 0;      // Lower limit of temperature scale
+  upper = 300;    // Upper limit of temperature scale
+  step = 20;      // Step size
+
+  fahr = lower;
+  while (fahr <= upper) {
+    celsius = 5 * (fahr-32) / 9;
+    printf("%d\t%d\n", fahr, celsius);
+    fahr = fahr + step;
+  }
+
+  return 0;
+}
+

1-2/temperature2.c

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+/*
+ * Print a table of Fahrenheit temperatures and their Celsius equivalents.
+ * From K&R 2nd ed., 1-2
+*/
+
+#include <stdio.h>
+
+int main (void) {
+  int fahr, celsius;
+  int lower, upper, step;
+
+  lower = 0;      // Lower limit of temperature scale
+  upper = 300;    // Upper limit of temperature scale
+  step = 20;      // Step size
+
+  fahr = lower;
+  while (fahr <= upper) {
+    celsius = 5 * (fahr-32) / 9;
+    printf("%3d %7d\n", fahr, celsius);
+    fahr = fahr + step;
+  }
+
+  return 0;
+}
+