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#include <stdio.h>
void perror(const char *s)
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#include<stdio.h>
#include<stdlib.h>
int main ()
{
FILE *fp;
fp=fopen("/tmp/xx","r+");
if(fp==NULL) perror("fopen");
return 0;
}
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#include <string.h>
char * strerror(int errnum)
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#include <string.h>
#include <stdio.h>
int main ()
{
//ÏÔʾ´íÎó´úÂë0µ½9µÄ´íÎóÔÒòÃèÊö
int i;
for(i=0;i<10;i++)
fprintf(stderr,"%d:%s \n",i,strerror(i));
return 0;
}
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int error;
int fildes;
if (close(fildes)==-1){
error = errno;
fprintf(stderr,"Failed to close descriptor %d :%s\n",
fildes,strerror(errono);
errno = error;
}
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