全WA

#include<bits/stdc++.h>
using namespace std;

int main(){
    int a,al=0,cd=2;
    char b[10000];
    cin>>a;
    int j=1;
    for(int i=0;i<=a;i++){
        gets(b);
        char f;
        int c=0,d=0;
        if(b[0]=='a'||b[0]=='b'||b[0]=='c'){
            f=b[0]; 
            al=1;
        } 
        //cout<<b;
        if(f=='a'){
            if(al==1) j=2; 
            else j=0;
            //cout<<b[j]<<endl;
            while(b[j]!=' '){
                c+=b[j]-'0';
                c*=10;
                //cout<<"C"<<c<<" "<<j<<endl;
                j++;
                cd++;
            }
            j++;
            while(b[j]!='\0'){
                d+=b[j]-'0';
                d*=10;
            //  cout<<d<<" "<<j<<endl;
                j++;
                cd++;
            }
            int e=(c/10)+(d/10);
            while(e!=0){
                e/=10;
                cd++;
            }
            printf("%d+%d=%d\n%d\n",c/10,d/10,(c+d)/10,cd);
            al=0;
        }
        if(f=='b'){
            if(al==1) j=2; 
            else j=0;
            //cout<<b[j]<<endl;
            while(b[j]!=' '){
                c+=b[j]-'0';
                c*=10;
                //cout<<"C"<<c<<" "<<j<<endl;
                j++;
                cd++;
            }
            j++;
            while(b[j]!='\0'){
                d+=b[j]-'0';
                d*=10;
            //  cout<<d<<" "<<j<<endl;
                j++;
                cd++;
            }
            int e=(c/10)-(d/10);
            if(e<0) cd++;
            while(e!=0){
                e/=10;
                cd++;
            }
            printf("%d-%d=%d\n%d\n",c/10,d/10,(c-d)/10,cd);
            al=0;
        }
        if(f=='c'){
            if(al==1) j=2; 
            else j=0;
            //cout<<b[j]<<endl;
            while(b[j]!=' '){
                c+=b[j]-'0';
                c*=10;
                //cout<<"C"<<c<<" "<<j<<endl;
                j++;
                cd++;
            }
            j++;
            while(b[j]!='\0'){
                d+=b[j]-'0';
                d*=10;
            //  cout<<d<<" "<<j<<endl;
                j++;
                cd++;
            }
            int e=(c/10)*(d/10);
            while(e!=0){
                e/=10;
                cd++;
            }
            printf("%d*%d=%d\n%d\n",c/10,d/10,(c*d)/100,cd);
            al=0;
        }
        cd=2;
    }
}

样例没有问题，测试点1也没有，看是全WA，求解555