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Update c++_example1.cpp

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Francis 2022-04-10 17:35:59 +08:00 committed by GitHub
parent 92dd0fe190
commit 03ee450eef
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1 changed files with 6 additions and 4 deletions
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10
codingStyleIdioms/3_RAII/c++_example1.cpp
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@ -12,7 +12,8 @@ vector<string> read_lines_from_file(string &file_name) {
string line; string line;
ifstream file_handle (file_name.c_str()); ifstream file_handle (file_name.c_str());
while (file_handle.good() && !file_handle.eof()) { // file_handle.peek()!=EOF 解决多读一行问题
while (file_handle.good() && !file_handle.eof() && file_handle.peek()!=EOF) {
getline(file_handle, line); getline(file_handle, line);
lines.push_back(line); lines.push_back(line);
} }
@ -26,7 +27,8 @@ vector<string> * read_lines_from_file1(string &file_name) {
string line; string line;
ifstream file_handle (file_name.c_str()); ifstream file_handle (file_name.c_str());
while (file_handle.good() && !file_handle.eof()) { // file_handle.peek()!=EOF
while (file_handle.good() && !file_handle.eof() && file_handle.peek()!=EOF) {
getline(file_handle, line); getline(file_handle, line);
lines->push_back(line); lines->push_back(line);
} }
@ -40,7 +42,7 @@ vector<string> * read_lines_from_file1_1(string &file_name) {
string line; string line;
ifstream file_handle (file_name.c_str()); ifstream file_handle (file_name.c_str());
while (file_handle.good() && !file_handle.eof()) { while (file_handle.good() && !file_handle.eof() && file_handle.peek()!=EOF) {
getline(file_handle, line); getline(file_handle, line);
lines->push_back(line); lines->push_back(line);
} }
@ -63,4 +65,4 @@ int main() {
int count1 = read_lines_from_file1_1(file_name1)->size(); int count1 = read_lines_from_file1_1(file_name1)->size();
cout << "File " << file_name << " contains " << count1 << " lines."; cout << "File " << file_name << " contains " << count1 << " lines.";
return 0; return 0;
} }