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  1. mcs-0111 No. of Printed Pages : 3 MCA (Revised) Term-End Examination December, 2011 0 -• O MCS-011 : PROBLEM SOLVING AND PROGRAMMING Time : 3 hours Maximum Marks : 100 (Weightage 75%) Note : Question number 1 is compulsory. Answer any three qu . estions from the rest. 1. (a) What are different basic data types in C ? 10 Explain the need of different numeric data types with example of each. (b) Given the sizes of three different sides, write a C program to find whether a triangle can be formed or not. (c) What are the logical operators in C ? E xplain how they can be used for constructing the logical expressions ? 5 (d) What is an array ? Write a C program using array to find largest and smallest number from a list of 100 given numbers. 5 MCS-011 1 P.T.O.

  2. Write a C program using switch to determine, whether the root of a quadratic equation is real or not. 5 (e) (f) Differentiate between call by value and call 10 by reference using example program. 2. (a) Write a function subs(s, n) in C, which prints the first n-characters of the string s provided n is less than the length of the string. Write a program in C to display the string "ARRAY" in the following format : 5 (b) 5 A AR ARR ARRA ARRAY (c) What is union ? How it is different from 10 structure ? E xplain. How a union is declared in C ? Also write a program in C to show use of union. 3. (a) Explain the differences between static and auto variables, with example of each. (b) Write a C program using pointer to reverse 10 a given string. MCS-011 2

  3. (c) Explain the syntax of do-while statement. Also differentiate do-while from while statement. (s) What is recursion ? Write a C program using recursion to print the Fibonacci series upto a given number. 4. 10 10 (b) Write a C program using array to find the average price of apples and oranges, in ten cities in the country. 10 5. (a) Write a C program to store string "This is my file" in a file. 10 (b) What is pointer to pointer ? Explain need of pointer to pointer with an example. Also show how address of variable in this case is calculated/ determined ? 3 MCS-011

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