如题所述
double s;int i=1;for(i=1;i++;i<=100){ if(i%2!=0){ s += 1/i; } else{ s -= 1/i; }}print("%lf",s);çå°æ¨èæåç°åéäºä¸æ¥ï¼æ´æ£ä¸ä¸ã