Question

程序D1053.c的功能是：在指定的文件中存入一串从键盘输入的字符(@表示结束输入)，文件名通过命令行指定：

改/*********Found************/下的内容
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[])
{
FILE *fp;
char ch;

/*********Found************/
if (argc != ______________)
{
printf("the number of arguments not correct\n\n");
printf("Usage: 可执行文件 filename\n");
exit(1);
}

/*********Found************/
if ((fp = fopen(______________, "w")) == NULL)
{
printf("can not open this file\n");
exit(2);
}

for( ; (ch=getchar()) != '@' ; )
{
/*********Found************/
fputc(______________);
}

fclose(fp);
return 0;
}

Answer 1

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[])
{
FILE *fp;
char ch;

/*********Found************/
if (argc != 2)
{
printf("the number of arguments not correct\n\n");
printf("Usage: 可执行文件 filename\n");
exit(1);
}

/*********Found************/
if ((fp = fopen(argv[1], "w")) == NULL)
{
printf("can not open this file\n");
exit(2);
}

for( ; (ch=getchar()) != '@' ; )
{
/*********Found************/
fputc(ch, fp);
}

fclose(fp);
return 0;
}