{
intfactoral = 1
while( i != 7 )
{
factoral *= ( factoral + 1)
factoral++
}
return0
}
望采纳
#include <stdlib.h>#include <stdio.h>
#include <time.h>
void main()
{
time_t t
int sum=0,a
srand((unsigned) time(&t))
a=rand()
printf("随机数为:%d\n",a)
while(a)
{
if(a%10==7)
sum++
a/=10
}
printf("7的个数为:%d\n",sum)
}
这是随机输出的算法。