#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define max(a,b) a>b?a:b
#define min(a,b) a>b?b:a
int sum[101];
void jia(char a[],char b[])
{
int flag=0,i,len1,len2,lenmax,lenmin;
len1=strlen(a),len2=strlen(b);
lenmax=max(len1,len2),lenmin=min(len1,len2);
for(i=1;i<=lenmax;i++)
{
if(i<=lenmin)
{
sum[lenmax-i]=a[len1-i]+b[len2-i]-'0'-'0'+flag;
if(sum[lenmax-i]>=10)
{
sum[lenmax-i]=sum[lenmax-i]-10;
flag=1;
}
else flag=0;
}
else{
if(len1>len2)
{
sum[lenmax-i]=a[len1-i]-'0'+flag;
if(sum[lenmax-i]>=10)
{
sum[lenmax-i]=sum[lenmax-i]-10;
flag=1;
}
else flag=0;
}
else
{
sum[lenmax-i]=b[len2-i]-'0'+flag;
if(sum[lenmax-i]>=10)
{
sum[lenmax-i]=sum[lenmax-i]-10;
flag=1;
}
else flag=0;
}
}
}
if(flag==1)
printf("1");
for(i=0;i<lenmax;i++)
printf("%d",sum[i]);
printf("\n");
}
void jian(char a[],char b[])
{
int flag=0,i;
int len1,len2;
len1=strlen(a),len2=strlen(b);
for(i=1;i<=len1;i++)
{
if(i<=len2)
{
if(a[len1-i]-b[len2-i]-flag>=0)
{
sum[len1-i]=a[len1-i]-b[len2-i]-flag;
flag=0;
}
else
{
sum[len1-i]=a[len1-i]-b[len2-i]-flag+10;
flag=1;
}
}
else
{
if(a[len1-i]-flag-'0'>=0)
{
sum[len1-i]=a[len1-i]-flag-'0';
flag=0;
}
else
{
sum[len1-i]=a[len1-i]-flag+10-'0';
flag=1;
}
}
}
for(i=0;i<len1&&sum[i]==0;i++);
for(;i<len1;i++)
printf("%d",sum[i]);
printf("\n");
}
void compare(char a[],char b[])
{
int len1,len2;
len1=strlen(a),len2=strlen(b);
if(len1>len2||(len1==len2&&strcmp(a,b)>0))
jian(a,b);
else if(strcmp(a,b)!=0)
{
printf("-");
jian(b,a);
}
else
printf("0\n");
}
int main()
{
char a[100],b[100];
gets(a);
gets(b);
if(a[0]=='-'&&b[0]!='-')
{
printf("-");
jia(&a[1],b);
}
else if(a[0]=='-'&&b[0]=='-')
compare(&b[1],&a[1]);
else if(a[0]!='-'&&b[0]=='-')
jia(a,&b[1]);
else
compare(a,b);
return 0;
}
POJ100题.zip （98个子文件） 
T071.cpp 361B T086.cpp 390B T044.cpp 442B T074.cpp 2KB T075.cpp 518B T063.cpp 107B T083.cpp 415B T045.cpp 505B T002.cpp 254B T039.cpp 341B T054.cpp 233B T022.cpp 259B T059.cpp 874B T036.cpp 527B T062.cpp 854B T040.cpp 323B T009.cpp 282B T015.cpp 252B T047.cpp 436B T065.cpp 254B T043.cpp 466B T033.cpp 296B T026.cpp 398B T014.cpp 300B T090.cpp 204B T016.cpp 642B T048.cpp 613B T027.cpp 705B T031.cpp 642B T056.cpp 272B T005.cpp 413B T084.cpp 760B T055.cpp 444B T058.cpp 470B T049.cpp 579B T010.cpp 212B T041.cpp 377B T029.cpp 346B T064.cpp 1KB T018.cpp 440B T017.cpp 411B T037.cpp 220B T003.cpp 145B T068.cpp 849B T067.cpp 566B T080.cpp 1KB T099.cpp 371B T030.cpp 889B T035.cpp 316B T073.cpp 374B T004.cpp 137B T051.cpp 271B T088.cpp 476B T060.cpp 282B T011.cpp 298B T050.cpp 438B T081.cpp 407B T034.cpp 275B T097.cpp 249B T079.cpp 1KB T032.cpp 364B T076.cpp 2KB T021.cpp 628B T012.cpp 216B T028.cpp 487B T057.cpp 773B T007.cpp 256B T100.cpp 299B T091.cpp 377B T019.cpp 375B T092.cpp 323B T098.cpp 744B T023.cpp 837B T069.cpp 461B T013.cpp 292B T082.cpp 296B T042.cpp 371B T006.cpp 506B T061.cpp 1002B T046.cpp 551B T020.cpp 233B T038.cpp 316B T095.cpp 419B T096.cpp 294B T008.cpp 373B T085.cpp 955B T094.cpp 701B T087.cpp 562B T089.cpp 763B T024.cpp 359B T093.cpp 843B T072.cpp 580B T001.cpp 101B T070.cpp 284B T025.cpp 261B T052.cpp 348B T078.cpp 681B T053.cpp 418B
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