11.11作业

#include <stdio.h>  

int main(){
    int s = 0;
    int i = 1;
    while (i <= 99)
    {
        s = s + i;
        i = i + 2;
    }
    printf("1到99的奇数和为：%d\n", s);  
    return 0;
}

#include <stdio.h>

int main() 
{
   int s = 0;
   int i = 2;
   while (i <= 100)
   { 
   s = s + i; i = i + 2; 
   } 
   printf("2到100的偶数和为：%d\n", s);
   return 0;
}