8-2-3.c

2005软件工程师考试下午编程题源代码

/*中国系统分析员顾问团，http://www.csai.cn*/
/*程序员下午考试指南书籍源码*/

#include <stdio.h>
#define MAXNUM 100

int sum( int n,int *pa ){
int count,total,temp;
*pa = 2;
*(++pa)= 3;
total = 5; count = 2;
while (count++<n){
temp = (*(pa-1)) * (*pa);
if (temp<10){
total += temp;
*(++pa) = temp;
}
else{
*++pa= temp/10;
total += *pa;
if ( count<n) {
count++; pa++;
*pa = temp%10;
total += *pa;
}
}
}
return(total);
}

main (){
int n,*p,*q,num[MAXNUM];
do {
printf( "Input N=? (2<N<%d):",MAXNUM+1 );
scanf( "%d",&n );
} while ( n<3 || n>MAXNUM );
printf( "\nsum(%d)=%d\n",n,sum(n,num) );
for ( p=num, q = p+n ; p<q; p++) printf("%4d",*p );
printf("\n");
}