Struct not retaining data when passed as a pointer - c

Question

I've defined a header file with a struct and function prototypes that take a pointer to a struct as a parameter. The code compilation goes fine except that struct instantiated in the main do not seem to retain numerical data.
This is the header file:
#ifndef _GETDATA
#define _GETDATA
#include <stdio.h>
struct PERSONDATA{
char name[20];
double age,mass;
};
typedef struct PERSONDATA person;
extern void getData(person *);
extern void getName(char *,int);
#endif
This is the getData.c file:
#include <stdio.h>
#include "GETDATA.h"
void getData(person *ptr)
{
printf("Enter name: ");
getName(ptr->name,sizeof(ptr->name));
printf("enter age: ");
scanf("%f",&(ptr->age));
printf("enter mass: ");
scanf("%f",&(ptr->mass));
}
and this is the getName.c file:
#include <stdio.h>
#include "GETDATA.h"
void getName(char *ptrName, int varSize)
{
int i=0;
do
{
*(ptrName++) = getchar();
++i;
if(i==varSize) printf("array full, EXITING!\n");
}while(*(ptrName-1)!='\n' && i<varSize);
*(ptrName-1) = '\0';
}
The main function is as follows:
#include <stdio.h>
#include "GETDATA.h"
int main(int argc, char **argv)
{
person human1;
printf("hello, world!\n\n");
getData(&human1);
printf("\nData entered: \n");
printf("\tname = %s\n",human1.name);
printf("\tMass = %f\n",&(human1.mass));
printf("\tAge = %f\n",&(human1.age));
return 0;
}
This is the console output when the code is run:
What could be going wrong here?

Answer 1

Your values are doubles, not floats. You need to use %lf with scanf():
printf("enter age: ");
scanf("%lf",&(ptr->age));
printf("enter mass: ");
scanf("%lf",&(ptr->mass));
Also, your prints are wrong. You are passing a pointer. It should be
printf("\tMass = %f\n",human1.mass);
printf("\tAge = %f\n",human1.age);