把char型的怎么转成int型的？在C语言中~
c\u8bed\u8a00\u4e2d\uff0c\u600e\u6837\u628a\u5185\u5bb9\u4e3a\u6570\u5b57\u7684char\u8f6c\u6362\u4e3aint\uff1f\u5185\u5bb9\u4e3a\u6570\u5b57\u7684char\uff0c\u5305\u542b
0,1,2,3,4,5,6,7,8,9
\u5171\u8ba110\u4e2a\u5b57\u7b26\u3002
\u8fd9\u5341\u4e2a\u5b57\u7b26\u5728\u5b58\u4e3a\u5b57\u7b26\u578b\u65f6\uff0c\u5176\u5b58\u50a8\u503c\u4e3a\u5bf9\u5e94\u7684ascii\u7801\uff0c\u800c\u8fd9\u4e9bascii\u7801\u662f\u8fde\u7eed\u7684\uff0c\u4e14\u6309\u7167\u5176\u672c\u8eab\u6570\u5b57\u7684\u5927\u5c0f\u6765\u6392\u5217\u3002
\u8fd9\u6837\u5c31\u53ef\u4ee5\u5c06\u5b57\u7b26\u503c\uff0c\u51cf\u53bb\u8d77\u59cbascii\u7801\u503c\u5b9e\u73b0\u8f6c\u4e3a\u5bf9\u5e94\u503c\u7684\u6548\u679c\u3002
\u8bbe
int a; //\u8f6c\u6362\u7684\u76ee\u6807\u53d8\u91cf\u3002
char c = '7'; //\u8981\u8f6c\u6362\u7684\u5b57\u7b26\u3002
c = a - '0';
\u8fd9\u6837\u5f97\u5230\u7684\u5c31\u662f\u5bf9\u5e94\u7684\u503c\u4e86\uff0c\u5373c = 7\u3002
\u5982\u679c\u5728\u6587\u4ef6\u4e2d\u9700\u8981\u591a\u6b21\u8be5\u64cd\u4f5c\uff0c\u5219\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u5e26\u53c2\u5b8f\uff0c\u5982\u4e0b\uff1a
#define chartonumber(x) (x-'0')
\u8fd9\u6837\u53ea\u9700\u8981\u8c03\u7528
c = chartonumber(a);
\u5373\u53ef\u5b9e\u73b0\u6548\u679c\u3002
char a='1';char base='0';int i = (int)a - (int)base;//\u53ef\u4ee5\u7b80\u5355\u70b9\u5199\u4e00\u4e2a\u5b8f#define ATOI(X) ( (X) - 30)\u539f\u7406\u5c31\u662f\u5b57\u7b26\u578b\u5b9e\u9645\u662f\u5b58\u50a8\u7684\u6574\u6570\uff0c\u5177\u4f53\u6570\u503c\u53ef\u67e5ASCII\u8868\uff0c\u800c\u6570\u5b570-9\u7684ASCII\u662f\u76f8\u90bb\u7684\uff0c\u6570\u5b57\u5b57\u7b26\u901a\u8fc7\u51cf\u53bb\u57fa\u7840\u7684'0'\u7684ASCII\u7801\u503c\uff0c\u5c31\u80fd\u5f97\u5230\u5bf9\u5e94\u7684\u5b57\u7b26\u4ee3\u8868\u7684\u5b9e\u9645\u6570\u5b57\uff0c\u7136\u540e\u8d4b\u503c\u7ed9\u5176\u4ed6\u6570\u5b57\u578b\u53d8\u91cf\u5373\u53ef\u3002
\u4e0b\u9762\u662fASCII\u8868
需要转变成的类型的变量=(需要转换成的类型)需要转换的类型的变量;
是啊,就这样子
绛旓細char a='1';char base='0';int i = (int)a - (int)base;//鍙互绠鍗曠偣鍐欎竴涓畯#define ATOI(X) ( (X) - 30)鍘熺悊灏辨槸瀛楃鍨嬪疄闄呮槸瀛樺偍鐨勬暣鏁帮紝鍏蜂綋鏁板煎彲鏌SCII琛紝鑰屾暟瀛0-9鐨凙SCII鏄浉閭荤殑锛屾暟瀛楀瓧绗﹂氳繃鍑忓幓鍩虹鐨'0'鐨凙SCII鐮佸硷紝灏辫兘寰楀埌瀵瑰簲鐨勫瓧绗︿唬琛ㄧ殑瀹為檯鏁板瓧锛岀劧鍚庤祴鍊肩粰...
绛旓細int a='key'-'0'灏哻har 瀛楃杞崲涓 ASCII鐮 鍑忓幓0鐨 ASCII鐮 瀹冧滑鐨勫樊鍊煎氨鏄int 鍨嬬殑鏁板
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绛旓細char a锛沬nt b锛沘=SBUF锛//鍋囧鎺ユ敹鍒扮殑a鐨勫兼槸123(涔熷氨鏄痑="123")鎵璋揳="123"锛岃繖鏄笉鍙兘鐨勶紙杩欎釜瀛楃涓查渶瑕4涓瓧鑺傛墠鑳戒繚瀛橈紝鑰宎鍙湁涓涓瓧鑺傦級銆傚鏋滄槸char a;a=123;鍒檃涓繚瀛樼殑鏄竴涓瓧绗︾殑ASCII鍊硷紝鍗砤鐨勫兼槸涓涓瓧绗︼紙涔熷氨鏄瓧绗'{'锛夈傚鏋滄兂瑕佽瀹杞崲涓篿nt鍨嬬殑123锛屾槸闈炲父...
绛旓細瀛楃涓杞垚鏁村瀷鍙互浣跨敤atoi鍑芥暟銆傚嚱鏁板師鍨嬶細int atoi(const char *nptr);鍔熻兘锛氭妸瀛楃涓杞崲鎴鏁村瀷鏁般傚弬鏁皀ptr瀛楃涓诧紝濡傛灉绗竴涓潪绌烘牸瀛楃瀛樺湪锛屾槸鏁板瓧鎴栬呮璐熷彿鍒欏紑濮嬪仛绫诲瀷杞崲锛屼箣鍚庢娴嬪埌闈炴暟瀛(鍖呮嫭缁撴潫绗 \0) 瀛楃鏃跺仠姝㈣浆鎹紝杩斿洖鏁村瀷鏁般傚惁鍒欙紝杩斿洖闆躲
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绛旓細寮哄埗绫诲瀷杞崲锛屽(int)num=char num[6],杩欐牱18080灏辨槸int鍨嬬殑浜
