sysy-data/final_performance_c/sy/recursive_call_1.sy

#include "sylib.h"
float myabs(float num)
{
    if (num > 0) {
        return num;
    }
    if (num < 0) {
        return -num;
    }
}

float func(float data, int num)
{
    if (num < 0) {
        return 0;
    }
    num = num - 1;
    data = data + func(data, num);
    data = data - func(data, num);
    return data;
}

int main()
{
    starttime();
    float a = 1.001;
    int num = getint();
    float res;
    float expect = 0.0;

    res = func(a, num);

    if (res - expect == 0)
        putch(112);
    stoptime();
    return 0;
}