Enter record and store information in C program

//enter record and store information
#include <stdio.h>

main()
{
FILE *fptr;
char name[20];
int age;
float salary;

/* open for writing */
fptr = fopen("emp.txt", "w");

if (fptr == NULL)
{
printf("File does not exists \n");
return 0;
}
printf("Enter the name \n");
scanf("%s", name);
fprintf(fptr, "Name = %s\n", name);
printf("Enter the age\n");
scanf("%d", &age);
fprintf(fptr, "Age = %d\n", age);
printf("Enter the salary\n");
scanf("%f", &salary);
fprintf(fptr, "Salary = %.2f\n", salary);
fclose(fptr);
}