Jensen's Device: Difference between revisions

=={{header|C}}==

<cpp>#include <stdio.h>

int i;

double sum(int *i, int lo, int hi, double (*term)()) {

double temp = 0;

for (*i = lo; *i <= hi; (*i)++)

temp += term();

return temp;

}

double term_func() { return 1.0 / i; }

int main () {

printf("%f\n", sum(&i, 1, 100, term_func));

return 0;

}</cpp>

Output: 5.18738