Which of the following statements is/are true? (1)Function declaration specifies the return type of function and types of parameters it will accept. (2)Variable declared in a function is also available for the other functions. (3) Function definition defines the task of main program.

Function declaration no doubt specifies return type and parameters of function. So, statement (1) is correct. Variable declared in a function is unique. So, it cannot be used by another function. So, statement (2) is false. Rules of function allow us to declare as many functions in a program as we want. So, statement (3) is incorrect. Hence, only statement (2) is correct.