C++ reading a String character by character
Solution 1
I have a constraint to read the input strings character by character
One way of reading character by character, is via std::basic_istream::get.
If you define
char c;
then
std::cin.get(c);
will read the next character into c.
In a loop, you could use it as
while(std::cin.get(c))
<body>
Solution 2
cin is whitespace delimited, so any whitespace (including \n) will be discarded. Thus, x will never be
Use getline for reading line from the input stream and then use istringstream to get formatted input from the line.
std::string line;
std::getline(cin, line);
std::istringstream iss(line);
while ( iss >> c) {
print the characters;
}
Shashank
Updated on June 07, 2022Comments
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Shashank almost 2 years
I have a constraint to read the input strings character by character. So I'm checking for
\nafter each string. But the program is not terminating.Here's the problem I'm facing in a very short code:
#include <iostream> using namespace std; int main() { char c; while(cin >> c) { char x; cin >> x; while(x != '\n') { // print the characters cin >> x; } } return 0; }In the above code,
cwill have the first character of the string whilexwill have the rest of characters one by one.Input Case:
banananobano abcdefhgijk Radaradarada