#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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