题目内容

程序f(int x){return x;}main(){float a=3.14;a=f(a);printf("%.2f\n",a);}执行结果为().

A. 3
B. 3.14
C. 3.00
D. 0

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执行下列程序后, 变量a的值应为().f1(float x){return x+1.3;}main(){float a;a=f1(2.4);}

A. 3.7
B. 3
C. 4
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