c++

Write the definition of a function absoluteValue, that receives an integer parameter and returns the absolute value of the parameter's value So, if the parameter's value is 7 or 803 or 141 the function returns 7,803 or 141 respectively. But if the parameter's value is -22 or 57, the function returns 22 or 57 (same magnitude but a positive instead of a negative). And if the parameter's value is o, the function returns 0. Write the definition of a function signor, that receives an integer parameter and returns a -1 if the parameter is negative, returns of the parameter is 0 and returns 1 If the parameter is positive. So, if the parameter's value is 7 or 803 or 141 the function returns 1. But if the parameter's value is -22 or 57, the function returns -1. And if the parameter's value is O, the function returns 0. Write the definition of a function is Positive, that receives an integer parameter and returns true if the parameter is positive, and false otherwise. So, if the parameter's value is 7 or 803 or 141 the function returns true. But if the parameter's value is -22 or -57, or O, the function returns false