1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | #include <stdio.h> #include <string.h> int compare(int*,int*); void swap(int* ,int* );void deal(int*,int*,int,int); int main(){char s1[100],s2[100];int oper1[100]={0},oper2[100]={0},m,n,c,k,i;gets(s1);gets(s2);m=strlen(s1);n=strlen(s2);(m<n? k=n : k=m); c=k;for(i=0;i<m;i++)oper1[k--]=s1[m-1-i]-'0';for(k=c,i=0;i<n;i++)oper2[k--]=s2[n-1-i]-'0';if(compare(oper1,oper2)==3) puts("0");if(compare(oper1,oper2)==1)deal(oper1,oper2,c,k);if(compare(oper1,oper2)==2){swap(oper1,oper2);printf("-");deal(oper1,oper2,c,k);}}void deal(int* oper1,int* oper2,int c,int k){for(int i=c;i>=0;i--){oper1[i]-=oper2[i];if(oper1[i]<0){oper1[i]+=10;oper1[i-1]--;}}for(int i=0;i<c;i++)if(oper1[i]==0&&oper1[i+1])k=i+1;for(int i=k;i<=c;i++)printf("%d",oper1[i]);}void swap(int* oper1,int* oper2){for(int i=0;i<100;i++){oper1[i]=oper1[i]+oper2[i];oper2[i]=oper1[i]-oper2[i];oper1[i]=oper1[i]-oper2[i];}} int compare(int* oper1,int* oper2){for(int i=0;i<100;i++){if(oper1[i]>oper2[i]) return 1;//操作数oper1大 if(oper1[i]<oper2[i]) return 2;//操作数oper2大}return 3;//操作数oper1和操作数oper2一样大 } |
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