比 struct luruqichexinxi { char checi[3]; char shifaz[7]; char zhongdianz[7]; char leixing[7]; char zuoweishu[7]; char licheng[7]; char sjian[7]; char zjian[7]; char piaojia[7]; }b[40]; 假设 b[v].checi = 12314512; 我想把b[v].checi值附给整形变量a请问应该写?