鏁版嵁緇撴瀯絎笁绔犺璁￠鍙婂弬鑰冪瓟妗圼3]_璺ㄨ€冪綉

聽1. 浠庨敭鐩樹笂杈撳叆涓€涓€嗘嘗鍏拌〃杈懼紡錛岀敤浼爜鍐欏嚭鍏舵眰鍊肩▼搴忋€傝瀹氾細閫嗘嘗鍏拌〃杈懼紡鐨勯暱搴︿笉瓚呰繃涓€琛岋紝浠?/span>$絎︿綔涓鴻緭鍏ョ粨鏉燂紝鎿嶄綔鏁頒箣闂寸敤絀烘牸鍒嗛殧,鎿嶄綔絎﹀彧鍙兘鏈?/span>+銆?/span>-銆?/span>*銆?/span>/鍥涚榪愮畻銆備緥濡傦細234 34+2*$銆?a target="_blank">灞變笢甯堣寖澶у 1999 涓?/span> 錛?/span>10鍒嗭級銆?/span>

銆€銆€銆愬弬鑰冪瓟妗堛€?/span>

銆€銆€[棰樼洰鍒嗘瀽]閫嗘嘗鍏拌〃杈懼紡(鍗沖悗緙€琛ㄨ揪寮?/span>)姹傚€艱鍒欏涓嬶細璁劇珛榪愮畻鏁版爤OPND,瀵硅〃杈懼紡浠庡乏鍒板彸鎵弿(璇誨叆)錛屽綋琛ㄨ揪寮忎腑鎵弿鍒版暟鏃訛紝鍘嬪叆OPND鏍堛€傚綋鎵弿鍒拌繍綆楃鏃訛紝浠?/span>OPND閫€鍑轟袱涓暟錛岃繘琛岀浉搴旇繍綆楋紝緇撴灉鍐嶅帇鍏?/span>OPND鏍堛€傝繖涓繃紼嬩竴鐩磋繘琛屽埌璇誨嚭琛ㄨ揪寮忕粨鏉熺$錛岃繖鏃?/span>OPND鏍堜腑鍙湁涓€涓暟錛屽氨鏄粨鏋溿€?/span>

銆€銆€float expr( )

銆€銆€//浠庨敭鐩樿緭鍏ラ€嗘嘗鍏拌〃杈懼紡錛屼互鈥?/span>$鈥欒〃紺鴻緭鍏ョ粨鏉燂紝鏈畻娉曟眰閫嗘嘗鍏板紡琛ㄨ揪寮忕殑鍊箋€?/span>

銆€銆€锝?/span>float OPND[30]; // OPND鏄搷浣滄暟鏍堛€?/span>

銆€銆€init(OPND); //涓ゆ爤鍒濆鍖栥€?/span>

銆€銆€float num=0.0; //鏁板瓧鍒濆鍖栥€?/span>

銆€銆€scanf (鈥?/span>%c鈥?/span>,&x);//x鏄瓧絎﹀瀷鍙橀噺銆?/span>

銆€銆€while(x!=鈥?/span>$鈥?/span>)

銆€銆€{switch

銆€銆€{case鈥?/span>0鈥?/span><=x<=鈥?/span>9鈥?/span>:while((x>=鈥?/span>0鈥?/span>&&x<=鈥?/span>9鈥?/span>)||x==鈥?/span>.鈥?/span>) //鎷兼暟

銆€銆€if(x!=鈥?/span>.鈥?/span>) //澶勭悊鏁存暟

銆€銆€{num=num*10+錛?/span>ord(x)-ord(鈥?/span>0鈥?/span>)錛?/span>; scanf(鈥?/span>%c鈥?/span>,&x);}

銆€銆€else //澶勭悊灝忔暟閮ㄥ垎銆?/span>

銆€銆€{scale=10.0; scanf(鈥?/span>%c鈥?/span>,&x);

銆€銆€while(x>=鈥?/span>0鈥?/span>&&x<=鈥?/span>9鈥?/span>)

銆€銆€{num=num+(ord(x)-ord(鈥?/span>0鈥?/span>)/scale;

銆€銆€scale=scale*10; scanf(鈥?/span>%c鈥?/span>,&x); }

銆€銆€}//else

銆€銆€push(OPND,num); num=0.0;//鏁板帇鍏ユ爤錛屼笅涓暟鍒濆鍖?/span>

銆€銆€case x=鈥?/span> 鈥?/span>:break; //閬囩┖鏍鹼紝緇х畫璇諱笅涓€涓瓧絎︺€?/span>

銆€銆€case x=鈥?/span>+鈥?/span>:push(OPND,pop(OPND)+pop(OPND));break;

銆€銆€case x=鈥?/span>-鈥?/span>:x1=pop(OPND);x2=pop(OPND);push(OPND,x2-x1);break;

銆€銆€case x=鈥?/span>*鈥?/span>:push(OPND,pop(OPND)*pop(OPND));break;

銆€銆€case x=鈥?/span>/鈥?/span>:x1=pop(OPND);x2=pop(OPND);push(OPND,x2/x1);break;

銆€銆€default: //鍏跺畠絎﹀彿涓嶄綔澶勭悊銆?/span>

銆€銆€}//緇撴潫switch

銆€銆€scanf(鈥?/span>%c鈥?/span>,&x);//璇誨叆琛ㄨ揪寮忎腑涓嬩竴涓瓧絎︺€?/span>

銆€銆€}//緇撴潫while錛?/span>x錛?/span>=鈥?/span>$鈥欙級

銆€銆€printf(鈥滃悗緙€琛ㄨ揪寮忕殑鍊間負(fù)%f鈥?/span>,pop(OPND));

銆€銆€}//綆楁硶緇撴潫銆?/span>

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