#include<stdio.h>
int main()
{
FILE *fp;
char ch;
if((fp=fopen("tense.txt","wt"))==NULL)
{
    printf("cannot open file\n");
getch();
exit(1);
}
printf("input data:");
while(ch=getchar()!='\n')
fputc(ch,fp);
fclose(fp);
getch();
return 0;
}   为什么编译连接后tense文件类容是乱码  不能在用fopen("tense.txt","rt")进行操作

注意运算符的结合性while(（ch=getchar()）!='\n')

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

if((fp=fopen("tense.txt","wt"))==NULL)
{
    printf("cannot open file\n");
getch();
return -1;
}


printf("input data:");
while(ch!='\n')
{
    ch=getchar();
fputc(ch,fp);
}
fclose(fp);
getch();
return 0;
}