以下程序的运行结果是( )。
#include <stdio.h> int f(int a); int main( ) { int a = 2, i; for (i = 0; i < 3; i++) printf("%4d", f(a)); } int f(int a) { int b = 0, c = 3; b++; c++; return (a + b + c); }
(A)7 10 13
(B)7 7 7
(C)7 9 11
(D)7 8 9
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