1 files changed, 38 insertions, 0 deletions

diff --git a/HTOI.c b/HTOI.c
new file mode 100644
index 0000000..a565224
--- /dev/null
+++ b/HTOI.c
@@ -0,0 +1,38 @@
+# include <stdio.h>
+
+# define HexBase 16
+
+int HexadecimalToInteger(char string[]) {
+
+    // The standalone Number *10* here in the FOR LOOP is a complementary value to make the hexadecimal function output correct values.
+
+    int DecimalNumberTotal = 0;
+
+    for (int i = 0;string[i] != '\0'; ++i) {
+      if (string[i] >= '0' && string[i] <= '9') {
+        DecimalNumberTotal = HexBase * DecimalNumberTotal + string[i] - '0';
+      }
+      else if (string[i] >= 'a' && string[i] <= 'f') {
+        DecimalNumberTotal = HexBase * DecimalNumberTotal + (string[i] - 'a' + 10);
+      }
+      else if (string[i] >= 'A' && string[i] <= 'F') {
+        DecimalNumberTotal = HexBase * DecimalNumberTotal + (string[i] - 'A' + 10);
+      }
+    }
+    return(DecimalNumberTotal);
+}
+
+// THE MAIN BLOCK
+
+int main () {
+    char TheHexString[1000];
+    printf("Give me a Hexadecimal to convert (Without the prefix 0x)\n\n");
+
+    while (scanf("%s", &TheHexString) != EOF) {
+
+        int res = HexadecimalToInteger(TheHexString);
+        printf("The result is :  %d\n\n", res);
+
+    }
+    return 0;
+}
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