20 lines
250 B
C++
20 lines
250 B
C++
#include <bits/stdc++.h>
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using namespace std;
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int main(void) {
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int n;
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double sum = 0.0;
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double sign = 1.0;
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scanf("%d", &n);
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for (int i = 1; i <= n; i++) {
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sum += sign / i;
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sign = -sign;
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}
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printf("f (%d) = %f\n", n, sum);
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return 0;
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} |