Important Questions

INSTRUCTION

• All questions are important for the final examination.
• This assignment includes theoretical questions, algorithm, flow chart, find a output.

Important questions

• Distinguish between the following pairs:
  • main() and void main(void)
  • int main() and void main()

• Give difference between compile and interpreter.
• Draw block diagram computer system and explain it.
• Give difference between software and hardware.
• What is machine or low level, high level language?
• What is initialization and why is it important.
• What is algorithm, list types of algorithm and explain it.
• What is flow chart and explain it.
• Give difference between flow chart and algorithm.
• Explain the structure of ‘C’ program.
• What is keyword and identifiers?
• List and explain the fundamental data types of ‘C’ language.
• What is data types and describe fundamental data types with type, purpose, size and range of values.
• What is operators, list of the operators and explain increment and decrement operators.
• What is size of operator and how it is useful?
• What is header file and how they are useful. Write the name of any 4 header files.
• What is the purpose of scanf() and printf() function.
• Explain use of getchar() and putchar() functions.
• Explain the syntax of multiple if…else statement.
• Explain the switch statement with example.
• What is loop and explain different types of looping structures.
• Compare break statement with continue statement.
• Difference between while and do…wile loop.
• What is string and what are the operations that can be performed on string.
• What is an array and what are its types.
• What are the advantages and disadvantages of pointers?
• Explain array of pointer with example.
• What is function, and what is user defined function.
• What is function prototype?
• What are the differences between local and global variables?
• Explain the difference between call by value and call by reference with example.
• What do you mean by recursive function, with example?
• Explain malloc() function and how it is useful in dynamic memory allocation.
• What is structure and explain its syntax with example.
• How the size of structure can be determined in ‘C’ program.
• What is union and how it differs from structure.
• State whether the following statements are true or false.
  • Every line in a C program should end with a semicolon.
  • Main() is where the program begins its execution.
  • The purpose of the header file such as stdio.h is to store the source code of a program.
  • Syntax errors will be detected by the compiler.
  • All variables must be given a type when they are declared.
  • The keyword void is a data type in C.
  • The scanf function can be used to read only one value at a time.
  • The C standard function that receives a single character form the keyboard is gerchar.
  • One if can have more than one else clause.
    A switch expression can be of any type.
  • The default case is required in the switch statement.
  • While loops can be used to replace for loops without any change in the body of the loop.
  • The type of all elements in an array must be the same.

• Draw a flow chart to find whether given number is odd or even.
• Draw a flow chart to find maximum number from three numbers.
• Draw a flow chart to reverse given number.
• Draw a flow chart to find maximum number form N different number.
• Write an algorithm to find out minimum number form three input number.
• Write an algorithm to find factorial of given number.
• Write an algorithm to find whether given number is Armstrong or not.
• What is the output of the following program?