C语言如何将文件中一行内容按照空格分割，并将每个单词写入数组？ C语言如何将文件中一行内容按照空格分割，并将每个单词写入数组...
C\u8bed\u8a00 \u6570\u7ec4 \u8f93\u5165\u4e00\u884c\u6587\u5b57,\u8981\u6c42\u5c06\u6bcf\u4e2a\u5355\u8bcd\u7684\u9996\u5b57\u6bcd\u7531\u5c0f\u5199\u6539\u4e3a\u5927\u5199,\u5355\u8bcd\u95f4\u7528\u7a7a\u683c\u9694\u5f00#include"stdio.h"void main(){int i;char str[100];printf("\u8bf7\u8f93\u5165\u4e00\u4e2a\u5b57\u7b26\u4e32:");gets(str);if(str[0]>=97&&str[0]=97&&str[i]<=122)str[i]=str[i]-32;}puts(str);}
\u5e0c\u671b\u6211\u7684\u56de\u7b54\u4f1a\u5bf9\u60a8\u6709\u6240\u5e2e\u52a9\uff01
\u7a0b\u5e8f\u5df2\u8c03\u8bd5\u8fc7\uff0c\u8fd0\u884c\u7684\u65f6\u5019\u628afilename\u6539\u4e3a\u4f60\u81ea\u5df1\u8def\u5f84\u4e0b\u7684\u6587\u4ef6\u3002
#include
#include
#include
char str[1000];
void openfile(char *filename)
{
FILE *fp;
int file_size;
if((fp=fopen(filename,"r")) == NULL)
{
printf("can not open this file\n");
exit(0);
}
fseek(fp,0,SEEK_END);
file_size=ftell(fp);
printf("%d\n",file_size);
fseek(fp,0,SEEK_SET);
fread(str,sizeof(char),file_size,fp);
str[file_size-1]='\0';
printf("%s\n",str);
fclose(fp);
}
void Split()
{
char w[100][100];
char *pfirst=str;
char *pend;
int i=0;
int j,sum=0;
memset(w,0,sizeof(w));
while(pfirst)
{
pend=strstr(pfirst," ");
if(pend==NULL)
{
strncpy(w[i],pfirst,strlen(str)-sum);
i++;
break;
}
strncpy(w[i],pfirst,pend-pfirst);
sum+=pend-pfirst+1;
pfirst=++pend;
i++;
}
for(j=0;j<i;j++)
printf("%s ",w[j]);
}
int main()
{
char filename[40]="/opt/opthb/liuly/a.txt";
openfile(filename);
Split();
return 0;
}
将文件中一行内容按照空格分割进行读取，可以采用fscanf("%s")来实现
实现过程：
定义二维字符数组，用来接收读到的每个单词
以读方式打开文件
循环读文件，将单词逐个读入数组
循环结束后，关闭文件
输出数组中的单词，以验证
参考代码：
#include <stdio.h>
int main(void)
{
FILE *fp ;
int i,j;
char words[100][21]; //最多读100个单词，每个单词不超过20个字符
fp=fopen("data.txt", "r");
if ( fp==NULL )
{
printf("open file error
");
return -1;
}
for( i=0;i<100;i++ ) //循环读取，控制不超过100个
{
if ( fscanf(fp, "%20s", words[i] )!= 1 ) //控制每个单词不超过20个
break;
}
fclose(fp);
for( j=0;j<i;j++ ) //反向输出各单词
printf( "%s ", words[j] ) ;
printf("
");
return 0;
}
程序已调试过，运行的时候把filename改为你自己路径下的文件。
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
char str[1000];
void openfile(char *filename)
{
FILE *fp;
int file_size;
if((fp=fopen(filename,"r")) == NULL)
{
printf("can not open this file\n");
exit(0);
}
fseek(fp,0,SEEK_END);
file_size=ftell(fp);
printf("%d\n",file_size);
fseek(fp,0,SEEK_SET);
fread(str,sizeof(char),file_size,fp);
str[file_size-1]='\0';
printf("%s\n",str);
fclose(fp);
}
void Split()
{
char w[100][100];
char *pfirst=str;
char *pend;
int i=0;
int j,sum=0;
memset(w,0,sizeof(w));
while(pfirst)
{
pend=strstr(pfirst," ");
if(pend==NULL)
{
strncpy(w[i],pfirst,strlen(str)-sum);
i++;
break;
}
strncpy(w[i],pfirst,pend-pfirst);
sum+=pend-pfirst+1;
pfirst=++pend;
i++;
}
for(j=0;j<i;j++)
printf("%s ",w[j]);
}
int main()
{
char filename[40]="/opt/opthb/liuly/a.txt";
openfile(filename);
Split();
return 0;
}
参考资料：http://www.myexception.cn/c/378790.html
http://zhidao.baidu.com/link?url=CgmvQRCaUXVcoKb77RjpTbVjqX_l2RdDkEPDhNJweJ5RSwm9JzFoIDpabu2TcuNMQr6PmpQiRAMXVXD86hb7Nq
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