1 files changed, 23 insertions, 0 deletions

diff --git a/1/15.c b/1/15.c
new file mode 100644
index 0000000..3499ec7
--- /dev/null
+++ b/1/15.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+
+/* converts fahrenhite to celsius */
+int ftoc(int fahr);
+
+int main(int argc, char *argv[]) {
+  int fahr, celsius;
+  int lower, upper, step;
+
+  lower = 0;
+  upper = 300;
+  step = 20;
+  fahr = lower;
+
+  while (fahr <= upper) {
+    printf("%d\t%d\n", fahr, ftoc(fahr));
+    fahr += step;
+  }
+
+  return 0;
+}
+
+int ftoc(int fahr) { return 5 * (fahr - 32) / 9; }
\ No newline at end of file