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for (sum = 0, i = 1; i<=N; sum+= i, i++);

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for (ch = 'a'; ch <= 'z'; ch++)...;

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for (n = 0; s[i] >= '0' && s[i] < '9'; i++)...;

for (n = 1; n*n*n <= 216; n++)...;

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for (printf(" ! \n"); num!=6;)

scanf("%d", & num);

printf(" , . \n");

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for (n = 1; n < 10*k; n += delta)...;

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