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字符函数和字符串函数知识总结

strlen

strcpy

strcat

strcmp

strncpy

strncat

strncmp

islower(ch)

isdigit()

iscntrl()

isspace()等等....

类型为 void*

(1).memcpy

(2).memmove

(3)memcmp

(4)memset

(1)memcpy (2)memmove (3)memcmp (4)memset

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