Type cast to a (double*)? - c

Question

I'm trying to allocate memory through a function and store the proper data type in that memory, but my int didn't work without (*int), how do I apply that as a double? (*double) is not working
#include <stdio.h>
#include <stdlib.h>
int newInt ();
double newDouble ();
int main() {
int userChoice;
int userValue;
int *intPtr;
double *doublePtr;
printf("Please choose which type of value you'd like to store (1-4).");
puts("\n 1.) Int \n 2.) Double \n");
scanf("%d", &userChoice);
if (userChoice == 1) {
intPtr = (int*)newInt();
printf("You chose an Int, please enter an Int value\n");
scanf("%d", *&intPtr);
printf("Memory value is %p \n", intPtr);
printf("Stored value is %d", *intPtr);
} else if (userChoice == 2) {
doublePtr = (double*)newDouble();
printf("You chose a Double, please enter a Double value\n");
scanf("%lf", *&doublePtr);
printf("Memory value is %p \n", doublePtr);
printf("Stored value is %lf", *doublePtr);
return 0;
}
int newInt () {
malloc(sizeof(int));
}
double newDouble () {
malloc(sizeof(double));
}

Answer 1

I fixed it.
Corrections in the comments.
IDEOne Link
#include <stdio.h>
#include <stdlib.h>
int* newInt (); // Changed the return type
double* newDouble (); // Changed the return type
int main() {
int userChoice;
// int userValue; Removing unused variable.
int *intPtr;
double *doublePtr;
printf("Please choose which type of value you'd like to store (1-4).");
puts("\n 1.) Int \n 2.) Double \n");
scanf("%d", &userChoice);
if (userChoice == 1) {
intPtr = newInt(); // Removed cast
printf("You chose an Int, please enter an Int value\n");
scanf("%d", intPtr); // Removed extra *&
printf("Memory value is %p \n", intPtr);
printf("Stored value is %d", *intPtr);
} else if (userChoice == 2) {
doublePtr = newDouble(); // Removed cast
printf("You chose a Double, please enter a Double value\n");
scanf("%lf", doublePtr); // Removed extra *&
printf("Memory value is %p \n", doublePtr);
printf("Stored value is %lf", *doublePtr);
}
return 0;
} // Added a missing bracket.
int* newInt () { // Changed the return type
return malloc(sizeof(int)); // Added a return statement
}
double* newDouble () { // Changed the return type
return malloc(sizeof(double)); // Added a return statement
}