#include<stdio.h>
#include<stdlib.h>
#include<string.h>
void replace(char *path,char *str,char *newstr);
int main(int argc,char *argv[])
{
if (strcmp(argv[1], "replace") == 0)
replace(argv[2],argv[3],argv[4]);
return 0;
}
void replace(char *path,char *str,char *newstr)
{
FILE *fp;
fp=fopen(path,"rb+");
char temp[20];
fscanf(fp,"%s",temp);
while(!feof(fp))
{
long size=strlen(temp);
if(strcmp(temp,str)==0)
{
strcpy(temp,newstr);
fseek(fp,-size,SEEK_CUR);
fprintf(fp,"%s",temp);
}
char temp[20]={0};
fscanf(fp,"%s",temp);
}
fclose(fp);
}
要想实现将文本文件中的str替换成newstr,请问上述代码哪里有问题