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FILE* createFile(char* filename)
{
	FILE *fptr;
 
 
	int i;
	if((fptr = fopen(strcat("D:\\CCPP\\file_list\\table\\", filename), "wb")) == NULL)
		puts("Cant create file");
	else
	{
		printf("File '%s' was successfully created\n", filename);
		fclose(fptr);
	}
	return fptr;
}

prog.c:1:1: error: unknown type name 'FILE'
 FILE* createFile(char* filename)
 ^
prog.c: In function 'createFile':
prog.c:3:2: error: unknown type name 'FILE'
  FILE *fptr;
  ^
prog.c:7:2: warning: implicit declaration of function 'fopen' [-Wimplicit-function-declaration]
  if((fptr = fopen(strcat("D:\\CCPP\\file_list\\table\\", filename), "wb")) == NULL)
  ^
prog.c:7:2: warning: implicit declaration of function 'strcat' [-Wimplicit-function-declaration]
prog.c:7:19: warning: incompatible implicit declaration of built-in function 'strcat'
  if((fptr = fopen(strcat("D:\\CCPP\\file_list\\table\\", filename), "wb")) == NULL)
                   ^
prog.c:7:11: warning: assignment makes pointer from integer without a cast
  if((fptr = fopen(strcat("D:\\CCPP\\file_list\\table\\", filename), "wb")) == NULL)
           ^
prog.c:7:79: error: 'NULL' undeclared (first use in this function)
  if((fptr = fopen(strcat("D:\\CCPP\\file_list\\table\\", filename), "wb")) == NULL)
                                                                               ^
prog.c:7:79: note: each undeclared identifier is reported only once for each function it appears in
prog.c:8:3: warning: implicit declaration of function 'puts' [-Wimplicit-function-declaration]
   puts("Cant create file");
   ^
prog.c:11:3: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   printf("File '%s' was successfully created\n", filename);
   ^
prog.c:11:3: warning: incompatible implicit declaration of built-in function 'printf'
prog.c:12:3: warning: implicit declaration of function 'fclose' [-Wimplicit-function-declaration]
   fclose(fptr);
   ^
prog.c:6:6: warning: unused variable 'i' [-Wunused-variable]
  int i;
      ^

Standard output is empty