MIS 24053 Lecture 10: File IO

• School: Kent State University
• Department: Management and Information Systems
• Course: MIS 24053
• Professor: Geoffrey Steinberg

Document Summary

#include ifstream fsin; fsin. open("fname. txt") connects stream fsin to the external file "fname. txt fsin. close() disconnects the stream and associated file. fsin >> c; //behaves just like cin. #include ofstream fsout; fsout. open("fname. txt") connects stream fsout to the external file. "fname. txt". fsout. close() disconnects the stream and associated file. fsout << c; //behaves just like cout. // reads three numbers from the file numbers. dat, // sums the numbers, and writes the sum to the file. // declare variables and read in the data (3 numbers) int first, second, third; input_stream >> first >> second >> third; // write the data to the output file output_stream << "the sum of the first 3\n" // close the input and output files input_stream. close(); output_stream. close(); return 0; << "is " << (first + second + third) File i/o: example 1. 2 char next; input_stream. get(next); while (! input_stream. eof()) cout << next; output_stream. put(next); input_stream. get(next); input_stream. close(); output_stream. close(); return 0; // declare the input and output streams ifstream input_stream; ofstream output_stream;