A pow() function is used to find power of any number x raised to any number y. To store the value of x^y in A the syntax used is

A=pow(x,y);

The abs() function returns only the magnitude of a number and not its sign.

A=abs(-5);

The value stored in A will be 5 and not ‘-5’

The isalnum() verifies whether a value is alphanumeric or not. If it is not, it will return 0.

A=’#’;

if(isalnum(A))

printf(“alphanumeric”);

else

printf(“Not alphanumeric”);

Output

Not Alphanumeric

The ceil(x) returns the value of smallest integer greater than x.

A=ceil(5.75);

This will store value 6 in A.