这是我的问题。输出文件为七行,如下所示:
Dinda
Jane
is
so
beautiful
and
handsome.
我们被要求读取输出文件有几行。但是,两行应仅计为1。因此,此程序中的确切行数应为四(包括最后一行)。我应该如何一次读两行?这就是我到目前为止所得到的。
#include<stdio.h>
main()
{
FILE *fp;
char filename[25];
char c[25][25];
int a;
clrscr();
printf("Enter File Name: ");
gets(filename);
if(filename==NULL)
{
printf("\nERROR! File Doesn't Exist!");
}
else
{
fp=fopen(filename,"r");
while(!feof(fp))
{
fgets(&c,sizeof(c),fp);
printf("%s",c);
if(strlen(c))
{
a++;
}
}
printf("The Number of Words are: %d",a);
fclose(fp);
getch();
}
}
最佳答案
像这样简单地做一下,为什么会很难(读两行):
#include<stdio.h>
#include<string.h>
main()
{
FILE *fp;
char filename[25];
char buffer[256];
int buffer_size = sizeof(buffer);
int a=0;
printf("Enter File Name: ");
fgets(filename,sizeof(filename),stdin); //Always use fgets
filename[strlen(filename)-1]='\0'; //Remove \n from the filename
fp=fopen(filename,"r");
if(fp==NULL) //Check if file pointer is NULL then return
{
printf("\nERROR! File Doesn't Exist!");
return;
}
while (fgets(buffer, buffer_size, fp)) //Count number of lines in file
{
a++;
}
fclose(fp);
//If number of lines are even then just divide by 2 else divide by 2 and add one
if (a % 2 == 0)
a = (a / 2);
else
a = (a / 2) + 1;
printf("The Number of lines are: %d",a);
return 0;
}