22 lines
389 B
C++
22 lines
389 B
C++
#include <iostream>
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#include <string>
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#include <cctype>
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using namespace std;
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string letter_case_switch(const string & str)
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{
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string result = str;
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if (str.size() == 0)
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return result;
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result[0] =
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isupper(result[0]) ? tolower(result[0]) : toupper(result[0]);
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return result;
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}
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int main()
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{
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string meow;
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cin >> meow;
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cout << letter_case_switch(meow) << endl;
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}
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