c语言菜单输入字母死循环,谢了个C语言小程序，结果无限死循环了求解决

问题补充：

//求解 a*x*x+b*x+c 的值

#include

#include

#include

int main(void)

{

int t, n;

n=1;

while(n == 1)

{

int a, b, c;

double delta;

double x1, x2;

printf("请分别输入a,b,c的值，以空格键分隔：\n");

scanf("%d%d%d",&a,&b,&c);

delta = b*b - 4*a*c;

if (delta > 0)

{

x1 = (-b + sqrt(delta)) / (2*a);

x2 = (b + sqrt(delta)) / (2*a);

printf("x1=%0.2f,x2=%0.2f\n",x1,x2);

}

else if (delta == 0)

{

x1 = (-b) / (2*a);

x2 = x1;

printf("x1=x2=%0.2f\n",x1);

}

else

{

printf("无解\n");

}

printf("退出请输入N ,重新输入请输入Y \n");

scanf("%d",&t);

if (t == 'n' || t == 'N')

{

n = 1;

continue;

}

else if (t == 'y' || t == 'Y')

{

n = 0;

printf("谢谢使用！");

getchar();

getchar();

system("cls");

}

}

return 0;

}