1 #include <stdio.h> 2 #include <string.h> 3 char a[1000],b[1000];int c[1005]; 4 int main () 5 { 6     int t,m,n; 7     scanf( "%d" , &t); 8     for ( int i = 1; i <= t; ++i) 9     {10         scanf( "%s%s" ,a ,b );11         printf( "Case %d:\n", i);12         printf( "%s + %s = " ,a ,b );13         n=strlen(a)-1;14         m=strlen(b)-1;15         int p = 0, k;16         for (  k=0 ; n >= 0 || m>=0 ;k++ ,n-- ,m--)17         {18             if( n >= 0 && m>= 0 )19                 c[k]=a[n] - ‘0‘ + b[m] - ‘0‘+p;20             if( n >= 0 && m < 0 )21                 c[k]=a[n]-‘0‘+p ;22             if ( n < 0 && m >= 0 )23                 c[k]=b[m]-‘0‘+p ;24             p=0;25             if(c[k]>9)26             {27                 c[k]=c[k]-10;28                 p=1;29             }30         }31         if(p==1)32             printf("%d",p);33         while(k--)34             printf( "%d" , c[k]);35         if( i<t )36             {printf("\n\n");}37         else38             {printf("\n");}39     }40     return 0;41 }