What is wrong with the following declaration? Explain. float *number = 2.30;
The following declaration float *number = 2.30; is not valid because it tries to assign a float value to a pointer to float. The correct way to assign a value to a pointer to float is by providing the address of a float variable or an array of float variables.
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Write a C program that reads a list of positive integers from keyboard, and prints the number of integers divisible by 2 or 3.
Write the inorder, preorder and postorder traversals of the following binary search tree.
A
/
B H
/ /
C E I
/ F
D / J
G
What do you understand by file organisation? Explain the methods of file organisation.
How will you store the following sparse matrix in vector and linked list representation so that only nonzero elements are stored?
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);
}
Arrange the following operators in descending order of their priority. If any two operators have the same priority, then specify their associativity.
+ = % + [ ] ! = − () − >
What is a pointer variable to a pointer? Where is it used? explain with an example