C QUESTIONS 1 3 points Pick any three functions from each of

C++ QUESTIONS!!!

1) [3 points] Pick any three functions from each of the following C++ libraries and list their function signatures. If a function is overloaded, pick one of its versions:

          a) cmath

Name

Signature

          b) cstring

Name

Signature

          c) cstdlib

Name

Signature

Solution

a. cmath:

abs(): takes a double value as input and returns its absolute value as output.

pow(): takes 2 double values as input, and returns the first parameter raised to the power of second and will return the result.

sqrt(): takes the double value as input, and will return the sqrt of it as output.

b. cstring:

strcpy(): takes two character pointers as input, and copies the second string value to the first string. The first parameter is also returned as output.

strcat(): takes two character pointers as input, and appends the second string value to the first string. The first parameter is also returned as output.

strcmp(): takes two character pointers as input, and will be compared. The difference is returned as output.

c. cstdlib:

atoi(): takes a character pointer as input, returns the integer equivalent of the same string as output.

rand(): will generate a random integer in the range 0 and RAND_MAX and will be returned as output.

malloc(): takes the size as input, and will allocate size number of bytes from memory, and the pointer to the memory location will be returned as output.