Chapter 1-2, exercises 1-3 and 1-4

1-2/temperature3.c

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+/*
+ * Print a table of Fahrenheit temperatures and their Celsius equivalents (floating point)
+ * From K&R 2nd ed., 1-2
+*/
+
+#include <stdio.h>
+
+int main (void) {
+  float fahr, celsius;
+  float lower, upper, step;
+
+  lower = 0;      // Lower limit of temperature scale
+  upper = 300;    // Upper limit of temperature scale
+  step = 20;      // Step size
+
+  fahr = lower;
+
+  printf("FAHRENHEIT TO CELSIUS TABLE\n");
+  
+  while (fahr <= upper) {
+    celsius = (5.0/9.0) * (fahr-32.0);
+    printf("%3.0f %6.5f\n", fahr, celsius);
+    fahr = fahr + step;
+  }
+
+  return 0;
+}
+

1-2/temperature4.c

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+/*
+    K&R C 2nd Edition, exercise 1-4
+    Convert Celsius temperatures to Fahrenheit (floating point)
+*/
+
+#include <stdio.h>
+
+int main(void) {
+    float fahr, celsius;
+    float upper, lower, step;
+
+    upper = 200;
+    lower = 0;
+    step = 10;
+
+    celsius = lower;
+
+    printf("Celsius to Fahrenheit conversion table\n\n");
+
+    while (celsius <= upper) {
+        fahr = celsius * (9.0/5.0) + 32.0; 
+        printf("%6.0f %6.2f\n", celsius, fahr);
+        celsius = celsius + step;
+    }
+
+    return 0;
+
+}