#include <stdio.h>
int main(void) {
int a=1;
int sum=0;
while( a<=100 )
{
if((a%3!=0)&&(a%5!=0)){
if(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以上のものの合計は%dです。 \n", sum
); return 0;
}
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