#include <stdio.h>
#include <string.h>

int main(int argc, char *argv[]){
	int i;   
	int j;
	int letterCount=20;
	int lettersInArray=letterCount;
	char input;
	int found = 0;
	
	char bingoArray[20]={'a','c','b','g','k','v','n',
					'm','l','s','e','t','y','w',
					'f','d','v','z','x','e'};
	
	printf("welcome to blind bingo\n");
	printf("enter letter to begin\n\n");
	while(lettersInArray>0){
		printf("\n");
		for(i=0;i<lettersInArray;){
			printf("%c ",bingoArray[i++]);
			if(i%5==0){
				printf("\n\n");
			}
		}
		printf("\n");
		scanf("%c",&input);
		j=0;
		found = 0;
		for(j=0;j<lettersInArray;j++){
			if(bingoArray[j]==input){
				found = 1;
				lettersInArray--;
			}
			if(found){
				bingoArray[j]=bingoArray[j+1];
			}
		}
		scanf("%c",&input);
	}
	printf("Bingo!\n");
}