write code in c program. And solve a) and b) exactly. * typedef struct {

char name[50];

int id;

char dept[20]; double cgpa;

} student;

1. Write a function void saveByDept(char *fileName, char *deptName , student allStudents[], int size) that will save the information of all students who belong to the department with name pointed to by deptName into a text file. The name of the file is given as an input parameter, filename.

2. Write another function to delete the students of the department with a CGPA greater than or equal to 3 from the file you have created in part (a).