Segmentation fault in malloc: [duplicate]

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• How to malloc inside a function and return pointer in C? 2 answers

assign malloc() returnd value to a function parameter then access to outside of that function... what`s wrong here? MY sample code:

#include <stdio.h>
#include <stdlib.h>

struct student{
    double cgpa;
    int id;
    char name[100];

};

void init(student *ptr)
{
    ptr = (struct student*)malloc(sizeof(struct student));
    ptr->id = 1;
    ptr->cgpa = 4.00;
    sprintf(ptr->name,"murad");
    printf("In Initfunc:nname %snid %dncgpa %lfn",ptr->name,ptr->id,ptr->cgpa);
}

int main()
{
    struct student *murad;
    init(murad);
    printf("IN Main:nname %snid %dncgpa %lfn",murad->name,murad->id,murad->cgpa);
    free(murad);
    return 0;
}