35 lines
791 B
C
35 lines
791 B
C
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#include <stdio.h>
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#include <math.h>
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int main()
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{
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int operation_counter = 0;
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int n;
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printf("Input n (must be a natural number): ");
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scanf("%d", &n);
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double result = 0;
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double denominator = 1;
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double power_of_four = 1;
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operation_counter += 3; // power_of_four = 1, denominator = 1, result = 0
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operation_counter += 2; // for loop
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for (int i = 1; i <= n; i++)
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{
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denominator *= i + cos(i);
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power_of_four *= 4;
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result += (power_of_four - i) / denominator;
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operation_counter += 9; // result += (power_of_four - i) / denominator, power_of_four *= 4, denominator *= i + cos(i), i <= n, i++
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}
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printf("Result = %.7f\n", result);
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printf("Number of operations = %d\n", operation_counter);
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return 0;
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}
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