added function to convert int to hex string for small ints

src/conversionOfNumbers/conversionOfNumbers.c

@@ -50,3 +50,19 @@ unsigned int convertBinaryStrToInt(char* input){
     }
     return result;
 }
+
+char* convertIntToHex(int input){
+    int length = 1;
+    int rest;
+    char* result = (char*)malloc(sizeof(char) * length + 1);
+    result[length] = '\0';
+    do{
+        rest = input % 16;
+        input /= 16;
+        switch(rest){
+            default: result[length - 1] = rest + '0'; break;
+        }
+        length--;
+    }while(input != 0);
+    return result;
+}