include stdlib include stdio int main int argc char argv int char fnam

#include <stdlib.h>
#include <stdio.h>

int main(int argc, char *argv[])
{ 
  int k=1;
  char c, fname[25];
  FILE *f, *buf;
  
  if(argc==1){
       printf("‚¢¥¤¨â¥ ¨¬ï ä ©«  ¤«ï ®¡à ¡®âª¨: ");  
       scanf("%s", fname);                                                 
  }
  if(argc==2){
       strcpy(fname, argv[1]);
  }  
  
   if((f=fopen(fname, "r"))==NULL) {
    printf("Žè¨¡ª  ¯à¨ ®âªàë⨨ ä ©« !\n");
    system("pause");
    return 0;
  }
  if((buf=fopen("buf.txt", "w"))==NULL) {
    printf("Žè¨¡ª  ¯à¨ ¯à¨ ᮧ¤ ­¨¨ ä ©« !\n");
    system("pause");
    return 0;
  }
  
  while(fscanf(f, "%c", &c)!=EOF){
  	
  	if (k){
  	   if((c>=65 && c<=90)||(c>=-64 &&c<=-33))
		  k=0;	
  	   if((c>=97 && c<=122)||(c>=-32 && c<=-1)){
  	   	  c-=32;
		  k=0;
       }
	}
  	if (c=='.' || c=='?' || c=='!' ) k++; 
	fprintf(buf, "%c", c);
  }
  
  fclose(f); 
  fclose (buf);
  remove(fname);
  rename("buf.txt",fname);
  return 0;
}