c语言中把文件中的空格去除

发布网友发布时间：2023-01-07 12:51

共4个回答

热心网友时间：2023-10-20 05:49

　　第一种：使用位域*读取的长度；

　　第二种：可以直接按照结构体来读写；

　　实例代码如下：

#include "stdafx.h"
#include <cstdio>
#include <cstdlib>
#include <cstring>

struct Roommate{
char name[6];
char NO[8];
char addr[10];
};

int _tmain(int argc, _TCHAR* argv[])
{
    struct Roommate Rom[2] = {0};
    FILE *file = NULL;
    if(!(file = fopen("a.txt", "w"))) {
        printf("Create File failed!\n");
        exit(-1);
    }

    printf("Please input four times Roommate data: Name NO Addr\n");
    for(int i=0; i<2; ++i) {
        scanf("%s%s%s", Rom[0].name, Rom[0].NO, Rom[0].addr);
        fwrite((const void *)&Rom[0], sizeof(struct Roommate), 1, file);
    }
    fclose(file);
    /* Read  from file*/
    file = NULL;
    if(!(file = fopen("a.txt", "r"))) {
        printf("Create File failed!\n");
        exit(-1);
    }
    printf("Read from the file: Name NO Addr\n");
    fread((void *)Rom, sizeof(struct Roommate), 2, file);
    for(int i=0; i<2; ++i) {
        printf("i=%d   Name:%s\tNO:%s\tAddr:%s\n", i, Rom[i].name, Rom[i].NO, Rom[i].addr);
    }
    fclose(file);

    while(getchar()) ;
    return 0;
}

热心网友时间：2023-10-20 05:49

你的这个 f 是文件指针，不是数据，使用 fgets(buffer, len, f); buffer为字符串也可以，然后就可以使用你的buffer++了。

热心网友时间：2023-10-20 05:50

#include <stdio.h>

main()
{
char acBuf[100+1];
char acBufTmp[100+1];

memset( acBuf , 0x00 , sizeof( acBuf ) );
memset( acBufTmp , 0x00 , sizeof( acBufTmp ) );

strcpy( acBufTmp , " aaa bbb ccc " ) ;
GetStr( acBufTmp , acBuf ) ;
printf( "字符串%s,字符串去掉空格的长度%d\n" , acBuf , strlen(acBuf)) ;
}

int GetStr( pcBufTmp , pcBuf )
char*pcBufTmp ;
char*pcBuf ;
{
characBuf[100+1];
characBufTmp[100+1];

int i,j=0;

for( i=0 ; i<=strlen(pcBufTmp)-1 ; i++ )
{
if( pcBufTmp[i] != ' ' )
{
pcBuf[j] = pcBufTmp[i] ;
j++ ;
}
}
}

热心网友时间：2023-10-20 05:50

#include<stdio.h>
int main()
{
FILE *fp;
FILE *out;
char ch;

fp=fopen("1.txt","r");
if(fp==NULL)
{
printf("cannot open file\n");
exit(1);
}

out=fopen("out.txt","w");
if(fp==NULL)
{
printf("cannot create file\n");
exit(1);
}
printf("please wait...\n");

while(!feof(fp))
{
ch=fgetc(fp);
if(ch!=' ')
{
fputc(ch,out);
}
}
printf("process complete\n");
fclose(fp);
fclose(out);

return 0;
}