Update Kood.c

Kood.c

@@ -16,30 +16,58 @@ int main(void){
 }
 
 int sisestus(const char tekst[40], char a[20], char b[20], char c[20], char d[20]){
+	int i;
 	printf("%s", tekst);
 	scanf("%s", a);
-	if(strlen(a) == 4){
+	if (strlen(a) == 4){
+		for (i = 0; i < strlen(a); i++){
+			if (a[i] != '0' && a[i] != '1'){
+				printf("Lubamatu sisend: %s", a);
+				return 1;
+			}
+		}
+		printf("\n%s\n", a);
         printf("Sisestage teine rida \n");
         scanf("%s", b);
         if (strlen(b) != 4){
             printf("Vale!");
         }
+        for (i = 0; i < strlen(b); i++){
+			if (b[i] != '0' && b[i] != '1'){
+				printf("Lubamatu sisend: %s", b);
+				return 1;
+			}
+		}
+		printf("\n%s\n", b);
         printf("Sisestage kolmas rida \n");
         scanf("%s", c);
         if (strlen(c) != 4){
             printf("Vale!");
         }
+        for (i = 0; i < strlen(c); i++){
+			if (c[i] != '0' && c[i] != '1'){
+				printf("Lubamatu sisend: %s", c);
+				return 1;
+			}
+		}
+		printf("\n%s\n", c);
         printf("Sisestage neljas rida \n");
         scanf("%s", d);
         if (strlen(d) != 4){
             printf("Vale!");
         }
+        for (i = 0; i < strlen(d); i++){
+			if (d[i] != '0' && d[i] != '1'){
+				printf("Lubamatu sisend: %s", d);
+				return 1;
+			}
+		}
 	}
 	else if (strlen(a) == 16){
 		return 0;
 	}
 	else{
-        printf("Vale!");
+		printf("Lubamatu sisend: %s", a);
 		return 1;
 	}
 	return 0;