18 lines
175 B
C
18 lines
175 B
C
#include <ctype.h>
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toupper(int c)
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{
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if(c < 'a' || c > 'z')
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return c;
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return (c-'a'+'A');
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}
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tolower(int c)
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{
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if(c < 'A' || c > 'Z')
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return c;
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return (c-'A'+'a');
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}
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