【关键在于怎么把大数读入数组（用一个char型变量做辅助）】
#include <stdio.h>#include <string.h>#define M 10#define N 1000void add(int *a,int *b,int *c)//加法{int i,carry=0;for (i=N-1;i>=0;i--) { c[i]=a[i]+b[i]+carry;if (c[i]>=M) { c[i]-=M; carry = 1; }else { carry = 0; } }}void con(int *a,int *c)//转换{int i,j; i=0;while (c[i]==0) i++; j=999;while (i<=999) a[j--]=c[i++];}void main(){int a[1000],b[1000],c[1000],i;char ch; memset(a,0,sizeof(a)); memset(b,0,sizeof(b)); i=999; memset(c,0,sizeof(c));while ((ch=getchar())!='\n') c[i--]=ch-48; con(a,c); i=999; memset(c,0,sizeof(c));while ((ch=getchar())!='\n') c[i--]=ch-48; con(b,c); memset(c,0,sizeof(c)); add(a,b,c); i=0;while (c[i]==0) i++;while (i<=999) printf("%d",c[i++]); printf("\n");}
转载于:https://www.cnblogs.com/CheeseZH/archive/2012/04/06/2435352.html
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