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#include <stdio.h>
#define SWAP(a,b){int t=a; a=b; b=t;}
void ArrSort(int C, char A[]);
void printPicked(char arr[], int n)
int PickedBack();
void Pick(int n, char picked[], int toPick);
int condition(char arr[]);
char H[8];
char P[8];
int L, C;
int main(void) {
	int i;
	scanf("%d%d",&L,&C);
	for(i=0;i<C;i++)
	{getchar(); scanf("%c", &H[i]);}
	pick(C,P,L);
	return 0;
}
 
void ArrSort(int C, char A[])
{
	int i, j;
	for(i=0;i<C-1;i++)
	for(j=i;j<C-1;j++){
		if(A[j]>A[j+1]) SWAP(A[j],A[j+1]);	
	}
}
 
void printPicked(char arr[], int n){
	int i;
	for(i=0;i<n;i++)
	printf("%c",arr[i]);
	printf("\n");
}
 
int PickedBack(){
	int i=0,j;
	for(;;i++)
	if(P[i]=='\0'){i--; break;}
 
	for(j=0;j<c;j++)
	if(H[j]==P[i])break;
	return j+1;
}
 
int condition(char arr[]){
	int a=0,b=0,i;
	for(i=0;i<L;i++){
		if(arr[i]==97 || arr[i]==105 || arr[i]==117 || arr[i]==101 || arr[i]==111)a++;
		else b++;
	}
	if(a>0 && b>1)return 1;
	else return 0;
}
 
void pick(int n, char picked[], int toPick){
	int smallest, next;
	if(toPick==0 && condition(picked)){
		printPicked(picked,n); return;
	}
	smallest=(picked[0]=='\0')?0:PickedBack();
	for(next=smallest;next<n;next++){
		picked[L-toPick]=H[next];
		pick(n,picked,toPick-1);
		picked[L-toPick]='\0';
	}
}

prog.c: In function 'printPicked':
prog.c:11:16: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
 int main(void) {
                ^
prog.c:21:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
 {
 ^
prog.c:29:36: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
 void printPicked(char arr[], int n){
                                    ^
prog.c:36:17: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
 int PickedBack(){
                 ^
prog.c:46:26: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
 int condition(char arr[]){
                          ^
prog.c:56:44: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
 void pick(int n, char picked[], int toPick){
                                            ^
prog.c:4:6: error: old-style parameter declarations in prototyped function definition
 void printPicked(char arr[], int n)
      ^
prog.c:67:1: error: expected '{' at end of input
 }
 ^

Standard output is empty