A + B Problem II Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 165469 Accepted Submission(s): 31614 Problem Description I have a very simple problem for you. Given two integers A and B, your job is to calculate the Sum of A + B. Input The first line of the input contains an integer T(1<=T<=20) which means the number of test cases. Then T lines follow, each line consists of two positive integers, A and B. Notice that the integers are very large, that means you should not process them by using 32-bit integer. You may assume the length of each integer will not exceed 1000. Output For each test case, you should output two lines. The first line is "Case #:", # means the number of the test case. The second line is the an equation "A + B = Sum", Sum means the result of A + B. Note there are some spaces int the equation. Output a blank line between two test cases. Sample Input 2 1 2 112233445566778899 998877665544332211 Sample Output Case 1: 1 + 2 = 3 Case 2:
112233445566778899 + 998877665544332211 = 1111111111111111110 代码如下:
#include<stdio.h> #include<string.h> #define M 1000 int a1[M+10]; int b1[M+10]; //int c[M+10]; char a[M+10]; char b[M+10]; int main() { int k,n; int i,j,t; int n1,n2; scanf("%d",&n); for(k=1;k<=n;k++) { scanf("%s %s",a,b); memset(a1,0,sizeof(a1)); memset(b1,0,sizeof(b1)); // memset(c,0,sizeof(c)); n1=strlen(a); /* for(i=0;i<n1;i++) c[i]=a[i]-'0';*/ for(j=0,i=n1-1;i>=0;i--) { a1[j]=a[i]-'0'; j++; } n2=strlen(b); for(j=0,i=n2-1;i>=0;i--) { b1[j]=b[i]-'0'; j++; } for(i=0;i<M;i++) { a1[i]+=b1[i]; if(a1[i]>=10) { a1[i]-=10; a1[i+1]++; } } printf("Case %d: %s + %s = ",k,a,b); for(i=M;(i>=0)&&(a1[i]==0);i--); if(i>=0) for(;i>=0;i--) printf("%d",a1[i]); else printf("0"); if(k==n) printf(" "); else printf(" "); } return 0; }