added currency converter

diff --git a/.gitignore b/.gitignore
index 88d050b1908057b53d38b42702ebc659e3d7f696..68c2d26f3a25b1fd668ed62a5a880d6c46aec51f 100644 (file)
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
-main
\ No newline at end of file
+main
+tempCodeRunnerFile.c
\ No newline at end of file

diff --git a/main.c b/main.c
index 6bedf0a2c713d1b23e7ee626215e448d2eb92860..1b7885e184afeaddfb2e008890c54d0ceab088a2 100644 (file)
--- a/main.c
+++ b/main.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <string.h>
 
 char intro();
 void tempConverter();
@@ -6,20 +7,20 @@ void currConverter();
 void massConverter();
 
 int main(){
-  char converter = intro();
+  int converter = intro();
   
   switch(converter){
-    case '1':
+    case 1:
       tempConverter();
       break;
-    case '2':
+    case 2:
       currConverter();
       break;
-    case '3':
+    case 3:
       massConverter();
       break;
     default:
-      printf("Oops...invalid option: '%c'", converter);
+      printf("Oops...invalid option: '%d'", converter);
       printf("\nTry again.");
       return 1;
   }
@@ -30,7 +31,7 @@ int main(){
 } 
 
 char intro(){
-  char choice;
+  int choice;
 
   printf("%.*s", 10, "=================");
   printf(" Welcome to the Basic Unit Converter! ");
@@ -38,14 +39,14 @@ char intro(){
   printf("\nChoose one from the list:\n");
   printf("(1)Temperature Converter\t(2)Currency Converter\n");
   printf("\t\t(3)Mass Converter\n");
-  scanf(" %c", &choice);
+  scanf(" %d", &choice);
   printf("\n");
 
   return choice;
 }
 
 void tempConverter(){
-  char choice;
+  int choice;
   float value;
   float result;
 
@@ -56,64 +57,104 @@ void tempConverter(){
   printf("(1)Celcius to Fahrenheit\t(2)Celcius to Kelvin\n");
   printf("(3)Fahrenheit to Celcius\t(4)Fahrenheit to Kelvin\n");
   printf("(5)Kelvin to Celcius\t\t(6)Kelvin to Fahrenheit\n");
-  scanf(" %c", &choice);
+  scanf(" %d", &choice);
   printf("Enter a value: ");
   scanf("%f", &value);
 
   switch(choice){
-    case '1':
+    case 1:
       result = (((float) 9 / 5) * value) + 32;
       printf("%.2f°C is %.2f°F", value, result);
       break;
-    case '2':
+    case 2:
       result = value + 273.15;
       printf("%.2f°C is %.2f°K", value, result);
       break;
-    case '3':
+    case 3:
       result = (value - 32) * ((float) 5 / 9);
       printf("%.2f°F is %.2f°C", value, result);
       break;
-    case '4':
+    case 4:
       result = (value + 459.67) * ((float) 5 / 9);
       printf("%.2f°F is %.2f°K", value, result);
       break;
-    case '5':
+    case 5:
       result = value - 273.15;
       printf("%.2f°K is %.2f°C", value, result);
       break;
-    case '6':
+    case 6:
       result = (value * ((float) 9 / 5)) - 459.67;
       printf("%.2f°K is %.2f°F", value, result);
       break;
     default:
-      printf("Oops...invalid option: '%c'", choice);
+      printf("Oops...invalid option: '%d'", choice);
       printf("\nTry again.");
   }
 }
 
 void currConverter(){
-  char choice;
+  int choice;
   float value;
   float result;
 
+  const float listOfConversions[] = {
+    // as of Jul 20, 2025 17:01:20 from openexchangesrates.org
+    57.110003, //usd to php
+    1.53705, //usd to aud
+    148.81007759, //usd to jpy
+    0.0175100674, //php to usd
+    0.0269138491, //php to aud
+    2.6056744839, //php to jpy
+    0.6505969227, //aud to usd
+    37.1555922058, //aud to php
+    96.8153785433, //aud to jpy
+    0.006719975, //jpy to usd
+    0.383777792, //jpy to php
+    0.0103289376, //jpy to aud
+  };
+
   printf("%.*s", 10, "-----------------");
   printf(" Welcome to the Currency Converter! ");
   printf("%.*s", 10, "-----------------");
   printf("\nChoose one from the list:\n");
   printf("(1)USD to PHP\t(2)USD to AUD\t(3)USD to JPY\n");
-  printf("(4)USD to EUR\t(5)USD to GBP\t(6)PHP to USD\n");
-  printf("(7)PHP to AUD\t(8)PHP to JPY\t(9)PHP to EUR\n");
-  printf("(10)PHP to GBP\t(11)AUD to USD\t(12)AUD to PHP\n");
-  printf("(13)AUD to JPY\t(14)AUD to EUR\t(15)AUD to GBP\n");
-  printf("(16)JPY to USD\t(17)JPY to PHP\t(18)JPY to AUD\n");
-  printf("(19)JPY to EUR\t(20)JPY to GBP\t(21)EUR to USD\n");
-  printf("(22)EUR to PHP\t(23)EUR to AUD\t(24)EUR to JPY\n");
-  printf("(25)EUR to EUR\t(26)EUR to GBP\t(27)GBP to USD\n");
-  printf("(28)GBP to PHP\t(29)GBP to AUD\t(30)GBP to JPY\n");
-  printf("(31)GBP to EUR\n");
-  scanf(" %c", &choice);
+  printf("(4)PHP to USD\t(5)PHP to AUD\t(6)PHP to JPY\n");
+  printf("(7)AUD to USD\t(8)AUD to PHP\t(9)AUD to JPY\n");
+  printf("(10)JPY to USD\t(11)JPY to PHP\t(12)JPY to AUD\n");
+  scanf(" %d", &choice);
   printf("Enter a value: ");
   scanf("%f", &value);
+
+  float conversionRate = listOfConversions[choice - 1];
+  char currencyToUse[4];
+  result = value * conversionRate;
+
+  if(choice == 4 || choice == 7 || choice == 10){
+    char currency[] = "USD";
+    strcpy(currencyToUse, currency);
+  } else if(choice == 1 || choice == 8 || choice == 11){
+    char currency[] = "PHP";
+    strcpy(currencyToUse, currency);
+  } else if(choice == 2 || choice == 5 || choice == 12){
+    char currency[] = "AUD";
+    strcpy(currencyToUse, currency);
+  } else if(choice == 3 || choice == 6 || choice == 9){
+    char currency[] = "JPY";
+    strcpy(currencyToUse, currency);
+  }
+
+  if(choice >= 1 && choice <= 3){
+    printf("%.2f USD is %.2f %s", value, result, currencyToUse);
+  } else if(choice >= 4 && choice <= 6){
+    printf("%.2f PHP is %.2f %s", value, result, currencyToUse);
+  } else if(choice >= 7 && choice <= 9){
+    printf("%.2f AUD is %.2f %s", value, result, currencyToUse);
+  } else if(choice >= 10 && choice <= 12){
+    printf("%.2f JPY is %.2f %s", value, result, currencyToUse);
+  } else{
+    printf("Oops...invalid option: '%d'", choice);
+    printf("\nTry again.");
+  }
 }
 
 void massConverter(){