My program starts the loop before scan is done - c

Question

I have a little problem, my program works well until it arrives to the final step, a scanf which asks for continuation of the loop. The problem is that this scan isn't working, but the following system("cls") works. Looks like javascript when async.
Here is the code.
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
char elegir_dificultad;
int dificil = 1;
printf("Desea que se le indique si el numero es menor o mayor? \n s/n \n");
scanf("%c",&elegir_dificultad);
if(elegir_dificultad == 's'){
dificil = 0;
}
while(1){
int aleatorio, cont, introducido;
cont = 1;
aleatorio = rand()%101;
printf("%d",aleatorio);
int fallo = 1;
while(fallo){
printf("Introduce el numero, intento numero %d \n", cont);
scanf("%d",&introducido);
if(introducido == aleatorio){
fallo = 0;
}
if(cont == 10){
break;
}
if(!dificil){
if(introducido < aleatorio){
printf("El numero introducido es menor que el aleatorio \n");
}
if(introducido > aleatorio){
printf("El numero introducido es mayor que el aleatorio \n");
}
}
if(fallo){
cont++;
}
}
char continuar;
if(fallo){
printf("Has perdido... el numero era %d \n Quieres repetirlo? s/n \n",aleatorio);
scanf("%c",&continuar);
if(continuar=='n'){
break;
}
system("cls");
}else{
printf("°Has ganado! el numero era %d \n Quieres repetirlo? s/n \n",aleatorio);
scanf("%c",&continuar);
if(continuar=='n'){
break;
}
system("cls");
}
}
system("PAUSE");
return 0;
}

Answer 1

This problem is because of \n character left behind by the previous scanf. Place a space before each %c specifier in scanf to eat up \n. .
scanf(" %c", &introducido);
...
scanf(" %c",&continuar);