exercise 5

5_Currency_Calculator/Currency_Calculator.c

@@ -0,0 +1,46 @@
+#include <stdio.h>
+
+int main() {
+    // variables
+    double amount = 0, usd = 1.09643, jpy = 148.33512; // eur = 1 as base currency
+    char currentCurrency = 0, targetCurrency;
+
+    // input
+    printf("1 EUR\n2 USD\n3 JPY\n\nPlease type in the current currency: ");
+    scanf("%i", &currentCurrency);
+    printf("Please type in the amount: ");
+    scanf("%lf", &amount);
+    printf("\n1 EUR\n2 USD\n3 JPY\n\nPlease type in the target currency: ");
+    scanf("%i", &targetCurrency);
+
+    // calculating
+    if (currentCurrency != targetCurrency) {
+        // converting to base currency
+        switch (currentCurrency) {
+            case 2:
+                amount /= usd;
+                break;
+            case 3:
+                amount /= jpy;
+                break;
+            default:
+                break;
+        }
+        // converting to target currency
+        switch (targetCurrency)
+        {
+        case 2:
+            amount *= usd;
+            break;
+        case 3:
+            amount *= jpy;
+        default:
+            break;
+        }
+    }
+
+    // output
+    printf("Amount in target currency is: %lf", amount);
+
+    return 0;
+}