hello (#18) [main](https://github.com/syedabdullahbukhari77/c-programming-fundamentals/tree/main) updated

Author: syedabdullahbukhari77

1_hello_world.c renamed to 01_hello_world.c

@@ -3,4 +3,4 @@
 void main () {
 	printf("Hello World!");
 	return 0;
-}
+}

2_variables.c renamed to 02_variables.c

@@ -11,4 +11,4 @@ int main() {
   printf("%f\n", myFloatNum);
   printf("%c\n", myLetter);
   return 0;
-}
+}

3_data_types.c renamed to 03_data_types.c

@@ -10,4 +10,4 @@ int main (){
 	printf("%c\n" , model);
 
 	return 0;
-}
+}

4_constant_variables.c renamed to 04_constant_variables.c

@@ -9,4 +9,4 @@ int main() {
 	printf("%c\n", characters);
 
 	return 0;
-}
+}

5_operators.c renamed to 05_operators.c

@@ -8,4 +8,4 @@ int main() {
   printf("%d\n", sum2);
   printf("%d\n", sum3);
   return 0;
-}
+}