#include <stdio.h>
int main(void) {
float s = 0;
float start = 0.5;
float end = 2;
float r = 0.5;
for (float i = start; i <= end; i += r ){
s += i;
}
printf("%f == %f", s
, 0.5 + 1 + 1.5 + 2); return 0;
}
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