one knowledge tip about value and while loop

1.a=(b–,c++,b+c)
in the end : a=b+c;
2.while loop
while(condition)
{
++or–;
then quit;
}

3. int a=4;
   a++ =5;
   ++a=5;
   1+(a++)=5;
   (++a)+1=6;

binary operator its usage–>
a>b?printf(“a>b\n”):printf(“a<b\n”);
printf(“a>b?a:b=%d\n”,a>b?a:b);
printf(“a<b?a:b=%d\n”,a<b?a:b);