2024.7.26 作业

1.使用fgets统计给定文件的行号

#include <myhead.h>
int main(int argc,const char *argv[])
{
if(argc!=2)
{
printf("input file error!!!\n");
        printf("usage:./a.out fileName\n");
        return -1;
}
FILE *fp=NULL;
if( (fp=fopen(argv[1],"r"))==NULL )
{
printf("fopen error\n");
return -1;
}
char buf[100]="";
int count=0;
while(1)
{
memset(buf,0,sizeof(buf));
if(fgets(buf,sizeof(buf),fp)==NULL)
{
break;
}
count++;
}
printf("一共有%d行\n",count);
    fclose(fp);
    return 0;
}

2.使用fgets、fputs完成两个文件的拷贝

#include <myhead.h>
int main(int argc,const char *argv[])
{
if(argc!=3)
{
printf("input file error!!!\n");
        printf("usage:./a.out fileName1 fileName2\n");
        return -1;
}
FILE *fp1=NULL;
if( (fp1=fopen(argv[1],"r"))==NULL )
{
printf("fopen error\n");
return -1;
}
FILE *fp2=NULL;
if( (fp2=fopen(argv[2],"w"))==NULL )
{
printf("fopen error\n");
return -1;
}
char buf[100]="";
while(1)
{
memset(buf,0,sizeof(buf));
if(fgets(buf,sizeof(buf),fp1)==NULL)
{
break;
}
fputs(buf,fp2);
}
    return 0;
}

思维导图

原文地址：https://blog.csdn.net/qq_64434282/article/details/140722697

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