我真的要疯了 看不出来哪里出问题了啊qwq

#include<stdio.h>
#include<string.h>
int main()
{
	int i,j,x,y,z,x1,y1,z1,z2=0,x2=0,y2=0;
	char n,m,h;
	scanf("%d",&i);

	
	for(j=0;j<i;j++)
	{
		getchar();
		getchar();
		h=getchar();
		if(h>=97&&h<=99)
	{
		scanf("%d %d",&x,&y);
	    switch(h)
	    {
	    	case'a':
	    	m=h;
			x1=x;
			y1=y;
			z=x+y;
			z1=z;
			if(x1<=0)
			x2++;
			if(y1<=0)
			y2++;
			if(z1<=0)
			z2++;
			while (x1)
			{
				x2++;
				x1/=10;
			}
			while (y1)
			{
				y2++;
				y1/=10;
			}
			while (z1)
			{
				z2++;
				z1/=10;
			}
			printf("%d+%d=%d\n",x,y,z);
			printf("%d\n",2+x2+y2+z2);
			z2=x2=y2=0;
			break;
		case 'b':
			m=h;
			x1=x;
			y1=y;
			z=x-y;
			z1=z;
			if(x1<=0)
			x2++;
			if(y1<=0)
			y2++;
			if(z1<=0)
			z2++;
			while (x1)
			{
				x2++;
				x1/=10;
			}
			while (y1)
			{
				y2++;
				y1/=10;
			}
			while (z1)
			{
				z2++;
				z1/=10;
			}
			printf("%d-%d=%d\n",x,y,z);
			printf("%d\n",2+x2+y2+z2);
			z2=x2=y2=0;
			break;
	    default:
			m=h;
			x1=x;
			y1=y;
			z=x*y;
			z1=z;
			if(x1<=0)
			x2++;
			if(y1<=0)
			y2++;
			if(z1<=0)
			z2++;
			while (x1)
			{
				x2++;
				x1/=10;
			}
			while (y1)
			{
				y2++;
				y1/=10;
			}
			while (z1)
			{
				z2++;
				z1/=10;
			}
			printf("%d*%d=%d\n",x,y,z);
			printf("%d\n",2+x2+y2+z2);
			z2=x2=y2=0;
			break;
		
			
		}
	}

    
    else
    {
    	h=h-'1'+1;
        scanf("%d %d",&x,&y);
        int a,s=0;
	while(x!=0)
	{
		a=x%10;
		x=x/10;
		s=10*s+a;
	}
	s=s*10+h;
	while(s!=0)
	{
		a=s%10;
		s=s/10;
		x=10*x+a;
	}
	switch(m)
	    {
	    	case'a':
	    	
			
			x1=x;
			y1=y;
			z=x+y;
			z1=z;
			if(x1<=0)
			x2++;
			if(y1<=0)
			y2++;
			if(z1<=0)
			z2++;
			while (x1)
			{
				x2++;
				x1/=10;
			}
			while (y1)
			{
				y2++;
				y1/=10;
			}
			while (z1)
			{
				z2++;
				z1/=10;
			}
			printf("%d+%d=%d\n",x,y,z);
			printf("%d\n",2+x2+y2+z2);
			z2=x2=y2=0;
			break;
		case 'b':
			x1=x;
			y1=y;
			z=x-y;
			z1=z;
			if(x1<=0)
			x2++;
			if(y1<=0)
			y2++;
			if(z1<=0)
			z2++;
			while (x1)
			{
				x2++;
				x1/=10;
			}
			while (y1)
			{
				y2++;
				y1/=10;
			}
			while (z1)
			{
				z2++;
				z1/=10;
			}
			printf("%d-%d=%d\n",x,y,z);
			printf("%d\n",2+x2+y2+z2);
			z2=x2=y2=0;
			break;
	    default:
			x1=x;
			y1=y;
			z=x*y;
			z1=z;
			if(x1<=0)
			x2++;
			if(y1<=0)
			y2++;
			if(z1<=0)
			z2++;
			while (x1)
			{
				x2++;
				x1/=10;
			}
			while (y1)
			{
				y2++;
				y1/=10;
			}
			while (z1)
			{
				z2++;
				z1/=10;
			}
			printf("%d*%d=%d\n",x,y,z);
			printf("%d\n",2+x2+y2+z2);
			z2=x2=y2=0;
		
		
		}
	}}}