int i,a; i=(a=2*4,a+5),a+6;不理解,

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int i,a; i=(a=2*4,a+5),a+6;不理解,

结果=表达式1,表达式2,……,表达式n;
此为顺序表达式,按顺序求出表达式1、表达式2、……、表达式n的值,结果为表达式n的值.
则i=(a=2*4,a+5),a+6;可以换成
a=2*4;
i=a+5;
a+6;
结果i=13.

a=8,逗号等式取最右侧的值,所以i=14

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