sai_kiran_n's blog

unable to understand this runtime error on testcase 9 having string length of 100
By sai_kiran_n, history, 7 weeks ago, In English

the submission: https://codeforces.net/contest/59/submission/279295434

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7 weeks ago, # |
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When the length of the string is exactly $$$100$$$, fgets(s, MAX_LEN, stdin); reads only these $$$100$$$ characters and not the '\n' character after the string. Therefore, your code cannot judge the end of the string by checking whether it's '\n'.

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    7 weeks ago, # ^ |
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    thank you! i get it now. i defined MAX_LEN as 101, but fgets reads MAX_LEN-1 which are given 100 chars but not the last entered '\n' and the condition never know when to break which causing the runtime error. the solution got accepted after i updated MAX_LEN as 102, where fgets reads till '\n'

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