int a=3,b=4,*q=&b; *q=a+b;a=5; q=(a

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inta=3,b=4,*q=&b;*q=a+b;a=5;q=(ainta=3,b=4,*q=&b;*q=a+b;a=5;q=(ainta=3,b=4,*q=&b;*q=a+b;a=5;q=(ainta

int a=3,b=4,*q=&b; *q=a+b;a=5; q=(a
int a=3,b=4,*q=&b; *q=a+b;a=5; q=(a

int a=3,b=4,*q=&b; *q=a+b;a=5; q=(a
int a=3,b=4,*q=&b; //定义a,b两个整形变量并赋值.定义整形指针变量q,并将变量b的地址赋给q.& 就是取地址.
*q=a+b;//*q表示指针变量q指向的地址,将a+b的值赋给这个地址.就是b代表的地址.b=a+b=3+4=7
a=5;//给a赋值.a=5
q=(a<b)?&a:&b;//表达式1?表达式2:表达式3.如果表达式1是真值,就是非零,取表达式2的值,作为整体的值;如果是假,就是零,取表达式3,作为整体的值.
//&a和&b就是取a,b的地址.q=(a<b)?&a:&b=(5<7)?&a:&b=(TRUE)?&a:&b=&a.q指向a
printf("%d %d %d\n",a,b,*q);//a=5,b=7,*q=a=5

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