Posts Tagged ‘C++’

LANGUAGE: C++ CHALLENGE: Assume that m is an int variable that has been given a value. Write a statement that prints it out in a print field of 10 positions.

LANGUAGE: C++ CHALLENGE: Write the necessary preprocessor directive to enable the use of the stream manipulators like setw and setprecision.

LANGUAGE: C++ CHALLENGE: Write the necessary preprocessor directive to enable the use of the exit function. Write the definition of a function named panic. The function prints the message “unrecoverable error” and then terminates execution of the program, indicating failure.

LANGUAGE: C++ CHALLENGE: Write the necessary preprocessor directive to enable the use of the exit function.

LANGUAGE: C++ CHALLENGE: Given a bool variable fileExists write the necessary code to set this variable to true if the file “crucial_data” exists and sets it to false otherwise.

LANGUAGE: C++ CHALLENGE: Given a bool variable isReadable write some statements that assign true to isReadable if the file “topsecret” exists and can be read by the program and assigns false to isReadable otherwise.

LANGUAGE: C++ CHALLENGE: Given an int variable x write some statements that attempt to open a file named “table20″ and read a value into x; if that turns out not to be possible your code should then read avalue from standard input into x.

LANGUAGE: C++ CHALLENGE: Read first a user’s given name followed by the user’s age from standard input. Then use an ofstream object named outdata to write this information separated by a space into a file called outdata. Assume that this is the extent of the output that this program will do.

LANGUAGE: C++ CHALLENGE: Given the availability of an ifstream object named indata and an ofstream object named outdata, write the other statements necessary to read one integer from a file called currentsales and write twice its value into a file called projectedsales. Assume that this is the extent of the input and output that this…

LANGUAGE: C++ CHALLENGE: Given the availability of an ofstream object named output, write the other statements necessary to write the string “3.14159″ into a file called pi. (Do not define a main function.)

LANGUAGE: C++ CHALLENGE: Given an ofstream object named output, associate it with a file named yearsummary.txt by opening the file for writing.

LANGUAGE: C++ CHALLENGE: Define two objects named outfile1 and outfile2 that can be used to write data from program variables to two different files.