d) Write the steps to change c
contents completely.
Answers
Explanation:
Questions Jobs Tags Users Badges Ask
Up vote
7
Down vote
modify existing contents of file in c
c edit file-handling
int main()
{
FILE *ft;
char ch;
ft=fopen("abc.txt","r+");
if(ft==NULL)
{
printf("can not open target file\n");
exit(1);
}
while(1)
{
ch=fgetc(ft);
if(ch==EOF)
{
printf("done");
break;
}
if(ch=='i')
{
fputc('a',ft);
}
}
fclose(ft);
return 0;
}
As one can see that I want to edit abc.txt in such a way that i is replaced by a in it.
The program works fine but when I open abc.txt externally, it seemed to be unedited.
Any possible reason for that?
Why in this case the character after i is not replace by a, as the answers suggest?