Курсовик1

#include <stdio.h>
#include <iostream.h>
#include <conio.h>
#include <stdlib.h>
FILE *mfclose(FILE *fl)
{
  fclose(fl);
  return 0;
};
int main(void)
{
  FILE *fl1=NULL,*fl2=NULL;
  char *name,buf1,buf2;
  int br=0;
  for(char r='y';r=='y';)
  {
    clrscr();
    while(fl1==NULL)
    {
      printf("Enter name of source file: \n >");
      gets(name);
      if((fl1=fopen(name,"r"))==NULL)
	{
	  perror("While file was opening, there were some errors");
	  printf("\n Restart program (y/n) \n >");
	  scanf("%c",&r);
	  if(r=='n') return 0;
	};
    };
    printf("\n\n***Sourse file :: %s ***\n\n",name);
    while(buf1!=EOF)
      printf("%c",buf1=getc(fl1));
    fl1=mfclose(fl1);
    fl1=fopen(name,"r");
    buf1=' ';
    printf("\n\n\n***Modified text***\n\n");
    while(buf1!=EOF)
      {
	buf1=getc(fl1);
	br+=(buf1=='(');
	br-=(buf1==')');
	if(br==0||((buf1<47)&&(buf1>58)||(buf1<64)&&(buf1>123)))
	  if(buf1!=')')
	    if(buf1!=EOF)
	      printf("%c",buf1);
      };
    fl1=mfclose(fl1);
    printf("\n\n\n***Save this modified text? (y/n) \n >");
    cin>>r;
    if(r=='y')
      {
	fl2=fopen(name,"r");
	while(fl1==NULL&&r=='y')
	  {
	    printf("Enter name of new file to save modified text: \n >");
	    gets(name);
	    if((fl1=fopen(name,"w"))==NULL)
	      {
		perror("While file was rewriting, there were some errors");
		printf("\n Repeat enter file name (y/n) \n >");
		scanf("%d",&r);
	      };
	  };
	buf1=' ';
	if(r=='y')
	  {
	    printf("\n\n***Saved file :: %s ***\n\n",name);
	    while(buf1!=EOF)
	      {
		buf1=getc(fl2);
		br+=(buf1=='(');
		br-=(buf1==')');
		if(br==0||((buf1<47)&&(buf1>58)||(buf1<64)&&(buf1>123))&&buf1==')')
		  if(buf1!=')')
		    if(buf1!=EOF)
		     {
		       printf("%c",buf1);
		       putc(buf1,fl2);
		     };
	      };
	    fl1=mfclose(fl1);
	    fl2=mfclose(fl2);
	  };
      };
    printf("\n\n\nRepeat start of program (y/n) \n >");
    cin>>r;
  };
  return 0;
};