题目内容
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[单选题]
下列程序的输出结果为()。#includevoid main(){int a[3][3] = {{1,2,3},{4,5,6},{7,8,9}};int i, j, sum = 0;for (i = 0; i < 3; i++){sum += a[i][i];}printf ("sum = %d/n", sum);}
A.sum = 25
B.sum = 45
C.sum = 15
D.sum = 9
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