Assignment 1
Answer the following questions.
Topics : Number Systems, Data types and Variables, Naming conventions,
Control statements, Loops
[Each question carries 5 marks]
1. Who invented C? Is C a case sensitive language?
2. Do the conversion:
(935.84)10 into binary, octal and hexadecimal
3. Do the conversion:
(1101101.11011)2 into decimal, octal and hexadecimal
4. Do the conversion:
(9CE. A4)16 into decimal, binary and octal
5. If A= 1100001 and B= 1001111
(a) Find A+B
(b) Find A-B and B-A using 2’s Complement method.
6. What are the naming conventions for variables and functions? Which of the
following names can not be used as a variable name? Show your reason.
total$, total_cost, case, 2total, arr15
7. What are preprocessor and preprocessor directives? Show an example.
What is the use of #define and #include?
8. Identify the type of error and show your reason:
a. #include<stdio.h>
int main()
{
int a;
a+=1;
return 0;
}
b. #include<stdio.h>
int main()
{
int a=1;
int b=a/0; return 0; }
9. What will be the value of x here? Give your reasoning.
int x = 10+20*10-(5*3)
10. Write a C program to calculate the following equation for any value of x.
11. Write a C program using switch-case that will read the month number and
display the month name.
12. Write a C program that will change the values of x, y, z in cyclic order.
X -> Y -> Z ->X
13. Rewrite the following code using the if else statement.
#include<stdio.h>
int main()
{
int i;
scanf("%d",&i);
switch(i){
case 1:
printf("one");
break;
case 2:
printf("two");
break;
case 3:
printf("three");
break;
default:
printf("Unrecognized Number");
}
return 0;
}
14. What is the difference between do…while and while loop? What will be the
output of the following code?
int i=0;
do{
printf("%d",i);
i- - ;
}while(i>0);
15. What is the use of break and continue keywords in C? What will be the output
of the following code?
#include<stdio.h>
int main()
{
int i;
for(i=1; i<20; i++)
{
printf(“%d”, i);
if(i==10) break;
}
return 0;
}
16. Write a C program to print alphabets from a to z using ASCII values.
17. Write down a program that will print the second largest of three integers given
as input.
18. What is the purpose of following statement :
for(; ; )
{
}
19. Write code for the following pattern:
20. Write a C program to count the number of digits in a number.
