#include <stdio.h>
int main(void) {
int a = 1;
int sum = 0;
while (a <= 100)
{
if ((a % 3 != 0)&&(a % 5 != 0)&&(a % 10 >= 6))
{
sum=sum+a;
}
a=a+1;
}
printf("1から100のうち、3の倍数でもなく、5の倍数でもない数字の中で、1の位の数字が6以上のものの和は %d です。\n", sum
);
return 0;
}
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