1 files changed, 45 insertions, 0 deletions
diff --git a/07_retirement/retirement.c b/07_retirement/retirement.c
new file mode 100644
index 0000000..fd2d5c5
--- /dev/null
+++ b/07_retirement/retirement.c
@@ -0,0 +1,45 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+struct _retire_info {
+  int months;
+  double contribution;
+  double rate_of_return;
+};
+typedef struct _retire_info retire_info;
+
+void retirement (int startAge,   //in months
+                 double initial, //initial savings in dollars
+                 retire_info working, //info about working
+                 retire_info retired) //info about being retired
+{
+  double balance = initial;
+  int age = startAge;
+  for (int i = 1; i <= working.months; i++) {
+    printf("Age %3d month %2d you have $%.2lf\n", age / 12, age % 12, balance);
+    balance = balance * (1 + working.rate_of_return) + working.contribution;
+    age++;
+  }
+
+  for (int i = 1; i <= retired.months; i++) {
+    printf("Age %3d month %2d you have $%.2lf\n", age / 12, age % 12, balance);
+    balance = balance * (1 + retired.rate_of_return) + retired.contribution;
+    age++;
+  }
+
+}
+
+int main (void) {
+  retire_info working;
+  working.months = 489;
+  working.contribution = 1000;
+  working.rate_of_return = 0.045/12;
+
+  retire_info retired;
+  retired.months = 384;
+  retired.contribution = -4000;
+  retired.rate_of_return = 0.01/12;
+
+  retirement(327, 21345, working, retired);
+  return EXIT_SUCCESS;
+}