Thread: structure print

hi
i have written structure program to print structure variable

Code:

#include <stdio.h>

struct person
{
   int age;
   float weight;
};


int main()
{
    struct person *personPtr;  /*hold address of structure Variable  type struct person */


    personPtr->age = 30;
    personPtr->weight=56;
   
    printf("Age: %d\n", personPtr->age);
    printf("weight: %f", personPtr->weight);
    
	return 0;
}

Program doesn't give as I supposed to do. It doesn't print age and weight