CSCI 240 - Quizzes 6 - 9 Questions And Answers Latest Updates

Write a C++ statement that takes the digit character in the char variable ch and changes it to its integer representation and saves the result in the integer variable intVal. So if ch contains '4', then intVal should contain the value 4. Assume that ch and intVal have been properly declared. - ️️intVal = ch - '0'; What will happen if a char is cout'd as an int? - ️️the ASCII value of the character will be displayed What is the ASCII value of the character '1'? - ️️49 What is the ASCII value of 'c'? - ️️99 Write a cout statement to display the ASCII value of the character stored in a char variable called ch. Assume that ch has been properly declared and contains a value. - ️️char ch; cout (int)ch; Explain what tolower() does to a character. The answer should include the argument(s) that are passed to tolower() (if any) and what it returns. - ️️tolower() takes a character that is passed Write a switch statement to print out a string depending on the value of a char variable called ch. If ~ ch is 'a' print "excellent" ~ ch is 'b' print "good" ~ ch is 'c' print "ok" ~ if ch is anything else, print "invalid" Assume that ch has been properly declared and contains a value. - ️️switch (ch) { case 'a': cout "excellent"; break; case 'b': cout "good"; break; case 'c': cout "ok"; break; default: cout "invalid"; } Declare an array named AR to hold 4 integers and fill it with the numbers 2, 4, 6, and 8. - ️️int AR[4] = { 2, 4, 6, 8};Assume an array called AR contains 4 integers. Write a loop to print out the values of the 4 integers. - ️️for ( int sub = 0; sub 4; sub++ ) { cout AR[sub]; } The data type char and the data type __________ are often interchageable in C++ - ️️int Assume an array called AR contains 4 integers. Write code to exchange the very first and the very last values in the array. - ️️int temp; temp = AR[0]; AR[0] = AR[3]; AR[3] = temp; Declare an array named AR to hold 1000 integers. In the declaration statement, initialize the array so the very first value is 10, the second is 20, and all the rest are 0. - ️️int AR[1000] = { 10, 20 }; Complete the following sentence: If you declare an array to hold N values, legal subscripts run from _____ to ______. - ️️0 to N - 1 Complete the following sentence: the unsubscripted name of an array is _______________________________. - ️️unsubscripted name of an array is the address of the array Write code to swap element [2] and element [4] in an array of floats called AR. Declare a simple variable called temp for this question, and assume the array is correctly declared and initialized. - ️️float temp; temp = AR[2]; AR[2] = AR[4]; AR[4] = temp; Write code to copy the 0th element of an array called AR into all the other elements of the array. Assume there are 10 elements in the array. - ️️for ( int sub = 1; sub = 10; sub++ ) { AR[sub] = AR[0]; } Complete the following sentence: all the elements of an array must be the same ____________. - ️️data type