试题24 有以下程序 #include double f(double x) main() { double a=0 int i for(i=0i<30i+=10) a+=f((double)i) printf(“%5.0f/n”, a) } double f(double x) { return x*x+1} 程序运行后的输出结果是()
A.
503
B.
401
C.
500
D.
1404
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