Stringstreams & Parsing
1
CS 103 Unit 14 ? Stringstreams and Parsing
2
I/O Streams
? '>>' operator used to read data from an input stream
? Always stops at whitespace
? '> buf;
fp
File text T h e e n d . \n EOF
EOF BAD FAIL
buf T h e \0
000
inf >> buf;
fp
File text T h e e n d . \n EOF
buf e n d . \0
EOF BAD FAIL 000
inf >> buf;
fp
File text T h e e n d . \n EOF
buf e n d . \0
EOF BAD FAIL 101
5
Which Option Works?
#include #include using namespace std; int main() {
vector nums; ifstream ifile("data.txt"); int x; while( !ifile.fail() ){
ifile >> x; nums.push_back(x); } ... }
data.txt
7 8 EOF
nums
_ ___
#include #include using namespace std; int main() {
vector nums; ifstream ifile("data.txt"); int x; while( 1 ){
ifile >> x; if(ifile.fail()) break; nums.push_back(x); } ... }
Goal is to read all integers from the file into a vector.
Which of the 3 works?
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