A + B Problem II
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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
大数问题,用字符串模拟即可
#include"stdio.h"#include"string.h"int main(){ char a[10001],b[10001]; int c[10001],j,k,g,h; int n,Al,Bl,sum; scanf("%d",&n); for (int i=1;i<=n;i++) { scanf("%s %s",a,b); getchar(); Al=strlen(a); Bl=strlen(b); if(i!=1) printf("\n"); printf("Case %d:\n",i); printf("%s",a); printf(" + "); printf("%s",b); printf(" = "); if (Al>=Bl) { for (j=Bl-1;j>=0;j--) { b[j+Al-Bl]=b[j]; } for (k=0;k<Al-Bl;k++) { b[k]='0'; } for (g=Al-1;g>0;g--) { sum=a[g]+b[g]-96; if (sum>=10) { c[g]=sum-10; a[g-1]=a[g-1]+1; } else c[g]=sum; } if (a[0]+b[0]-96>=10) { c[0]=a[0]+b[0]-106; printf("1"); for (h=0;h<Al;h++) { printf("%d",c[h]); } } else { c[0]=a[0]+b[0]-96; for (h=0;h<Al;h++) { printf("%d",c[h]); } } printf("\n"); } else { for (j=Al-1;j>=0;j--) { a[j+Bl-Al]=a[j]; } for (k=0;k<Bl-Al;k++) { a[k]='0'; } for (g=Bl-1;g>0;g--) { sum=a[g]+b[g]-96; if (sum>=10) { c[g]=sum-10; b[g-1]=b[g-1]+1; } else c[g]=sum; } if (a[0]+b[0]-96>=10) { c[0]=a[0]+b[0]-106; printf("1"); for (h=0;h<Al;h++) { printf("%d",c[h]); } } else { c[0]=a[0]+b[0]-96; for (h=0;h<Bl;h++) { printf("%d",c[h]); } } printf("\n"); } } return 0;}
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