To day is momday,monday is a new start of week,Today my job is very easily,I exercised to action specification for company.

Today:

枚举常量
#incloude <srdio.h>
int main()
{
enum colors
{
red,
orange,
yellow,
green,
cyan,
blue,
purple,

};
printf(”%d\n”,red);
printf(”%d\n”,orange);
printf(”%d\n”,yellow);
printf(”%d\n”,green);
printf(”%d\n”,cyan);
printf(”%d\n”,blue);
printf(”%d\n”,purple);
return 0;
}
操作符:
运算操作符:+ - * / %
移位操作符:>> <<
按位操作符:& ^ |
赋值操作符:+= -= *+ &= ^= /= >>= <<=
单目操作符:+ - sizeof & ++ -- ~ ! * (类型)
条件操作符:
关系操作符:= > < >= <= != ==
逻辑操作符 && ||