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Alex Rivera
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I tried to print Hello World 200,000 times and it took me forever, so I have to stop. But right after I add a char array to act as a buffer, it took less than 10 seconds. Why? Before adding a buffer: #include <iostream> using namespace std; int main() { int count = 0; std::ios_base::sync_with_stdio(false); for(int i = 1; i < 200000; i++) { cout << "Hello world!\n"; count++; } cout<<"Count:%d\n"<<count; return 0; } And this is after adding a buffer: #include <iostream> using namespace std; int main() { int count = 0; std::ios_base::sync_with_stdio(false); char buffer[1024]; cout.rdbuf()->pubsetbuf(buffer, 1024); for(int i = 1; i < 200000; i++) { cout << "Hello world!\n"; count++; } cout<<"Count:%d\n"<<count; return 0; } This makes me think about Java. What's the advantages of a using BufferReader to read in file?
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