Sem-2 Unit-2

1. Write a user defined function which will swap the values of two variables declared locally in the main program. 

2. Write a user defined function calc(), which will returns the sum, subtraction, multiplication, and division values of two variable locally declared in the main function. 

3. Write a user defined function which will return the length of the string declared locally in the main function. 

4. Write a program, which takes a name of the user in the lowercase letters. Call a user defined function upper which will convert all lowercase letters into the uppercase letter. Finally print the string.

5. Write a user defined function to reverse the given string.

6. Create a structure product with ProductCode (int), Name (char array) and Price data elements. In the main function declare p[5] of product. Do the necessary data entry for all five products. Pass the base address of an array to user defined function inc_price(), which will increase the price of all the products by 10%. Print all the products with all the details again after increasing the price. 

7. Create a structure student with rollno (int), name (char array), marks (int), grade (char). Create an array stu[5] of type student. Take the details of students like rollno, name, and marks from the user. Call UDF prepare_result() which will store the values for grade based on marks (if marks >=75 then ‘A’, Between 60 to 75 ‘B’, Between 50 to 60 ‘C’, Between 35 to 50 ‘D’ and Below 35 ‘F’ grade). Print the details of the students with Grade.