What do you understand by an automatic variable? How does it differ from a static variable? Explain.
A variable is a named storage location in memory that holds a value of a certain type. Variables can be classified into several types, including automatic and static variables.
An automatic variable is a variable that is allocated on the stack at runtime, when the function containing the variable is called. The lifetime of an automatic variable is limited ____ ____ __________ _____ ___.
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Give three different situations where the keyword typedef is used.
Write the inorder, preorder and postorder traversals of the following binary search tree.
A
/
B H
/ /
C E I
/ F
D / J
G
What is wrong with the following declaration? Explain. float *number = 2.30;
Based on Example 5 in Unit 12, write functions to add and multiply polynomials of real variables.
Write a function that evaluates an expression in RPN that is given as a string.
Write the output of the following C codes, with proper justification for each.
i) main()
{
int i = 5, j = 6, k = 7;
printf("%d", i++ - ++j + ++k);
}
ii) main()
{
char day[10] = "SUNDAY";
day[0] = 77;
day[1] = 79;
printf("%s", day);
}
iii) main()
{
int i = 3;
while(i--)
{
int i = 1;
printf("%d ", i);
i++;
}
}
iv) int f(int n)
{
if(n < 1)
return n;
else
return n*n + f(n-1);
}
main()
{
printf("%d", f(5));
}
v) struct employee
{
char name[20];
int id;
long salary;
}emp = {"Piyush", 1, 50000};
main()
{
printf("Name = %s ", emp.name);
printf("ID =%d", emp.id);
printf("Salary = %d", emp.salary);
}
Write a C program that reads a list of positive integers from keyboard, and prints the number of integers divisible by 2 or 3.