In C language, int a= 'R'

stay c In language ,int a=‘R’’; The correct expression is
A.a%10 ` B.a=int（3e2） C .2＊a=a++ D.a=a+a=a+3
Many answers on Baidu say a Cannot assign values to constants .
a Is an integer variable , Value is constant R Value . therefore a Can perform assignment operation .