單項選擇題

#includedouble f(double x);main(){ double a=0;int i;for(i=0;i<30;i+=10) a+=f((double)i);printf("%5.0f\n",a);}double f(double x){return x*x*i;}程序運行后的輸出結(jié)果是

A.503
B.401
C.500
D.1404
微信掃碼免費搜題