IGNOU Question Paper Solutions/MCA/Semester 5/MCSE-011 Parallel Computing/june 2010

MCA (Revised) Term-End Examination June, 2010 MCS-011: PROBLEM SOLVING AND PROGRAMMING Time 3 hours Maximum Marks weightage 75% Note: Question number 1 is compulsory and carries 40 marks. Attempt any three questions from the rest. 1.(a) write a program in C to search a record in an existing file and to update it. (10) 1.(b) explain the concept of array of pointers using pointers write a program to test whether the given string is a palindrome or not. 1(c) Differentiate between: (i) various storage classes. (ii) structure and union. 1(d) Why C is called a middle level language ? Give execution process. explain each step in detail. 2.(a) write a program to search an element in a given list of elements using linear search. 2 (b) write a recursive program to calculate the factorial of a given number. 2(c) Give an example to explain null pointer assignment. 3.(a) Write a program in C to find the multiplication of 2 matrices of size (3×3). 3(b) Write a macro for the following: (i) to find largest number among 3 given numbers. (ii) to find cube of a given number. 3(c) write a program in C, using structures to generate a report for students which displays Roll No. and Name of Student, total marks obtained by the student. assumptions can be made wherever necessary. 4(a) Write a program and flowchart to display the following pattern: H He HeL HeLL HeLLO HeLL HeL He H 4(b). Write a macro to demonstrate : #define, #if, #else preprocessor commands. 4(c). Write a program in C to find 12 + 32 +52 + 72 + 92 + …….. N2 5(a). Write a program to append the contents of second file to the contents of first file. 5(b). explain the difference between a top-down approach and a bottom-up approach in programming. 5(c). what do you understand by a decision-control statement ? Give an example of each.|