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strspn

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< c | string | byte
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<string.h>
size_t strspn( const char *dest, const char *src );
, dest, , src.
:
Returns the length of the maximum initial segment of the byte string pointed to by dest, that consists of only the characters found in byte string pointed to by src.
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dest
:
pointer to the null-terminated byte string to be analyzed
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src
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pointer to the null-terminated byte string that contains the characters to search for
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, , src
:
The length of the maximum initial segment that contains only characters from byte string pointed to by src
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C++ strspn
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