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why, is this weird behaviour of c++?
By rashid_aziz, history, 23 months ago, In English

include

using namespace std; int main() { string s = "abcd"; int i = -1; while(i < s.size()){ cout << "inside "; i++; } cout << "outside"; return 0; }

why this loop does not run, where as when we initialize i = 0, then it runs properly

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23 months ago, # |
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Auto comment: topic has been updated by rashid_aziz (previous revision, new revision, compare).

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23 months ago, # |
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You make a comparison between i, which is a signed int, and s.size(), which of an unsigned type. One of them must be casted to the type of the other one in order for the comparison to be calculated. Try casting s.size() to int manually and the code will run

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