[amp_mcq option1=”salesPtr = NULL;” option2=”*salesPtr = “”;” option3=”float &salesPtr = NULL;” option4=”float *salesPtr = “”; E. float *salesPtr = NULL;” correct=”option1″]<\/p>\n
The correct answer is E.<\/p>\n
A pointer is a variable that stores the address of another variable. The statement In conclusion, the correct answer is E.<\/p>\n","protected":false},"excerpt":{"rendered":" [amp_mcq option1=”salesPtr = NULL;” option2=”*salesPtr = “”;” option3=”float &salesPtr = NULL;” option4=”float *salesPtr = “”; E. float *salesPtr = NULL;” correct=”option1″]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[683],"tags":[],"class_list":["post-57590","post","type-post","status-publish","format-standard","hentry","category-object-oriented-programming-using-c-plus-plus","no-featured-image-padding"],"yoast_head":"\nsalesPtr = NULL<\/code> creates a pointer named salesPtr<\/code> and initializes it to the null pointer constant, which is a pointer that does not point to any object. The statement *salesPtr = \"\"<\/code> assigns the empty string to the object pointed to by salesPtr<\/code>, but salesPtr<\/code> is not initialized, so this statement will cause an error. The statement float &salesPtr = NULL<\/code> creates a reference named salesPtr<\/code> that refers to the null pointer constant. This is not a valid way to create a pointer, so this statement will also cause an error. The statement float *salesPtr = \"\"<\/code> creates a pointer named salesPtr<\/code> and initializes it to the address of the empty string. This is a valid way to create a pointer, but it is not a good way to initialize a pointer to a variable of type float<\/code>. The statement float *salesPtr = NULL<\/code> creates a pointer named salesPtr<\/code> and initializes it to the null pointer constant. This is a valid way to create and initialize a pointer.<\/p>\n