分别编写sum、average、和sort函数,分别求数组中10个元素的和,平均值和对10个数进行排序。要求以数组名作为函数参数传递,并且在主函数中实现一次调用。
Cmnæ¯ä¸ä¸ªæ°å¦ä¸çå ¬å¼ï¼å ¶ä¸mæ¯å ¶çä¸è§æ ï¼næ¯å ¶çä¸è§æ ã计ç®æ¹æ³æ¯
mÃ(m-1)Ã(m-2)Ãâ¦â¦å ±æn项çä¹ç§¯ï¼ç¶åé¤ä»¥nçé¶ä¹ç¨Cè¯è¨åè¿ä¸ªè®¡ç®çç¼ç¨ï¼æ¥éª¤å¦ä¸ï¼
1ãé¦å éè¦è¯»åmånçå¼ï¼ç¶åå¨è¯»åçåæ¶è¿è¡å¤ææ¯å¦æ»¡è¶³m>0ãn>0ãm>=nçæ¡ä»¶ï¼å¦æä¸æ»¡è¶³è¦æ±éæ°è¾å ¥ã
2ãç¶åå¯ä»¥æ建两个å½æ°fun1åfun2ï¼å ¶ä¸fun1çåæ°æ两个månï¼å©ç¨å¾ªç¯æ§å¶æ±åºmÃ(m-1)Ã(m-2)÷·····ï¼fun2çåæ°åªæä¸ä¸ªï¼ç¨æ¥æ±nçé¶ä¹ã
3ãè¿åå¼ï¼æ两ç§æ¹æ³ï¼ï¼1ï¼fun1åfun2è¿åæ´åå¼å°ä¸»å½æ°ï¼å¼ºå¶è½¬æ¢æfloatåï¼ï¼2ï¼ç´æ¥å¨fun1åfun2å½æ°ä¸å°è¿åå¼å¼ºå¶è½¬æ¢æfloatåï¼ç¶åè¿åå°ä¸»å½æ°è¿è¡è®¡ç®ã
4ãå¨ä¸»å½æ°ä¸è®¡ç®ä¸¤ä¸ªè¿åå¼çå·®ï¼æåè¾åºã
å ·ä½ä»£ç å¦ä¸ï¼(精度ä¸å¤è¯·æ int æ¢æ long long)
#include<stdio.h>int fun1(int m, int n){
int i, result;
for(result = m, i = 1; i < n; i++){
result *= --m;
}
return result;
}
int fun2(int n){
int result;
for(result = n; n > 2; ){
result *= --n;
}
return result;
}
int main(){
int m, n, result, x, y;
printf("请è¾å ¥å¤§äºé¶çæ´æ°mï¼");
while( 1 ){
scanf( "%d", &m );
if(m > 0)
break;
printf("\nè¾å ¥æ误ï¼è¯·éæ°è¾å ¥å¤§äºé¶çæ´æ°mï¼");
}
printf("\n请è¾å ¥å¤§äºé¶ä¸å°äºçäº%dçæ´æ°nï¼", m);
while(1){
scanf( "%d", &n );
if(n > 0 && n <= m )
break;
printf("\nè¾å ¥æ误ï¼è¯·éæ°è¾å ¥å¤§äºé¶ä¸å°äºçäº%dçæ´æ°nï¼", m);
}
x = fun1( m, n );
y = fun2( n );
result = x / y;
printf("\nç»ææ¯ï¼%d\n", result);
return 0;
}