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?
i) main()

{

char x;  int y;

x=100;  y=125;

printf(“%c \n”,x);

printf(“%c \n”,y);

printf(“%d \n”,x);

}

ii) main()

{

int x=100;

printf(“%d ”,10 +  x++);

printf(“%d ”,10 +  ++x);

}

iii)                main()

{

int x=10;

if(x=20)

printf(“true”);

else

printf(“false”);

}

iv)                int x=0;

if(x>=0)

if(x>0)

printf(“number is positive”);

else

printf(“number is negative”);

 

 

v)                  int a=10, b=5;

if(a>b)

{

if(b>5)

printf(“%d”,b);

}

else

printf(“%d”,a);

 

 

 

vi)                int m=100, n=0;

while(n= =0)

{

if(m<10)

break;

m=m-10;

}

vii)              int m=0;

do

{

if(m>10)

continue;

m=m+10

}while(m<50);

printf(“%d”,m);

 

viii)            char s1[]=”kolkotta”;

char s2[]=”pune”;

strcpy(s1,s2);

printf(“%s”,s1);

ix)                int m[2];

*(m+1)=100;

*m=*(m+1);

printf(“%d”,m[0]);

x)                  int m[2];

int *p=m;

m[0]=100;

m[1]=200;

printf(“%d %d”,++*p,*p);

 

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