1) Write user-defined function to calculate factorial of an integer using recursion. 2) Write C program to create a structure Student with members Roll No,Name, Percentage. Read at least 5 records and display the records. 3) Write C program to copy content of one text file into another ...

1) Write user-defined function to calculate factorial of an integer using 

recursion. 

2) Write C program to create a structure Student with members Roll No,

Name, Percentage. Read at least 5 records and display the records. 

3) Write C program to copy content of one text file into another text file. 

4) Write user defined function to calculate length of a string using pointer.