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If a string's length is determined at compile-time, how can I properly initialize it?
#include <string> int length = 3; string word[length]; //invalid syntax, but doing `string word = " "` will work word[0] = 'a'; word[1] = 'b'; word[2] = 'c'; ...so that i can do something like this?
Example: http://ideone.com/FlniGm
My purpose for doing this is because I have a loop to copy characters from certain areas of another string into a new string.
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The idea is to first, get the length L of the string is taken as input and then input the specific character C and initialize empty string str. Now, iterate a loop for L number of times. In every iteration, the specific character is concatenated with string str until the for loop ends.
std::string::resize() in C++ Syntax 1: Resize the number of characters of *this to num. void string ::resize (size_type num) num: New string length, expressed in number of characters.
A string is mutable and it's length can changed at run-time. But you can use the "fill constructor" if you must have a specified length: http://www.cplusplus.com/reference/string/string/string/
std::string s6 (10, 'x'); s6 now equals "xxxxxxxxxx".
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How about the following?
string word; word.resize(3); word[0] = 'a'; word[1] = 'b'; word[2] = 'c'; More on resizing a string: http://www.cplusplus.com/reference/string/string/resize/
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