4. Assume Python does not define the count method that can be applied to a string to determine the number of occurrences of a character within a string. Implement the function numChars that takes a string and a character as arguments and determines and returns how many occurrences of the given character occur within the given string. numchars.py 1 ## 2 # Counts the number of occurrences of a character within a string. 3# @param string the source string 4# @param target the character to search for 5 # @return the number of occurrences of target within string 6 # 7 def numChars (string, target): 8

What is the numeric value of each of the following expressions, as evaluated by the C# programming language? 2+5*3 9/4+10 10/3 2110 (51)*3 37/5 648 5+2*43*4 3*(2+5)/5 2852 19/2/2 28/(2+4)

(Data processing) Write a C++ program that allows the user to enter the following information from the keyboard for each student in a class (up to 20 students): Name Exam 1 Grade Exam 2 Grade Homework Grade Final Exam Grade For each student, your program should first calculate a final grade, using this formula: FinalGrade=0.20Exam1+0.20Exam2+0.35Homework+0.25FinalExam Then assign a letter grade on the basis of 90100=A,8089=B,7079=C,6069=D, and less than 60=F . All the information, including the final grade and the letter grade, should then be displayed and written to a file.

(Modify) Rewrite the following programs to conform to good programming practice and correct syntax: a. #include using namespace std; int main( ){ cout << “The time has come” ; return 0;} b. #include using namespace std; int main ( ){cout << “Newark is a city\n”;cout << “in New Jersey\n”; cout << “It is also a city\n” ; cout << “in Delaware\n” ; return 0;} c. #include using namespace std; int main() {cout << Reading a program\n”;cout << “is much easier\n” ; cout << “if a standard form for main is used\n” ; cout <<“and each statement is written\n”;cout << “on a line by itself\n” ; return 0;} d. #include using namespace std; int main ( ){ cout << “Every C++ program” ; cout <<“\nmust have one and only one” ; cout << “main function” ; cout << “\n The escape sequence of characters”) ; cout << “\nfor a newline can be placed anywhere” ; cout <<“\n in the message passed to cout” ; return 0;}

(Data processing) Write a C++ program that reads the file created in Exercise 4 one record at a time, asks for the number of hours each employee worked each month, and calculates and displays each employee’s total pay for the month.

When you perform arithmetic operations with operands of different types, such as adding an int and a float, ____________. C# chooses a unifying type for the result you must choose a unifying type for the result you must provide a cast you receive an error message

Pig Latin is a nonsense language. To create a word in pig Latin, you remove the first letter and then add the first letter and ay at the end of the word. For example, dog becomes ogday and cat becomes atcay. Write a program named PigLatin that allows the user to enter a word and displays the pig Latin version.

(Data processing) A bank’s customer records are to be stored in a file and read into a set of arrays so that a customer’s record can be accessed randomly by account number. Create the file by entering five customer records, with each record consisting of an integer account number (starting with account number 1000), a first name (maximum of 10 characters), a last name (maximum of 15 characters), and a double-precision number for the account balance. After the file is created, write a C++ program that requests a user-input account number and displays the corresponding name and account balance from the file.

(Statistical) In many statistical analysis programs, data values considerably outside the range of the majority of values are simply dropped from consideration. Using this information, write a C++ program that accepts up to 10 floating-point values from a user and determines and displays the average and standard deviation of the input values. All values more than four standard deviations away from the computed average are to be displayed and dropped from any further calculation, and a new average and standard deviation should be computed and displayed.

(Numerical) Write a program that tests the effectiveness of the rand() library function. Start by initializing 10 counters to 0, and then generate a large number of pseudorandom integers between 0 and 9. Each time a 0 occurs, increment the variable you have designated as the zero counter; when a 1 occurs, increment the counter variable that’s keeping count of the 1s that occur; and so on. Finally, display the number of 0s, 1s, 2s, and so on that occurred and the percentage of the time they occurred.