strerror函数的使用
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char * strerror ( int errnum );
Get pointer to error message string
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Interprets the value of errnum generating a string describing the error that usually?
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generates that error number value in calls to functions of the C library.?
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The returned pointer points to a statically allocated string, which shall not be modified by?
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the program. Further calls to this function will overwrite its content.
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The error strings produced by strerror depend on the developing platform and compiler.
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Parameters
errnum
Error number.
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Return Value
A pointer to the error string describing error errnum.?
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Example
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/* strerror example : error list */#include <stdio.h>#include <string.h>#include <errno.h>int main (){ FILE * pFile; pFile = fopen ("unexist.ent","r"); if (pFile == NULL) printf ("Error opening file unexist.ent: %s\n",strerror(errno)); return 0;}?
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Error opening file unexist.ent: No such file or directory
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perror