int x=4;int y=65;int *q;q=loca_card(int &x,int &y);int *loca_card(int &x,int &y){int j=0;int i=0;int mycard[2];int *q;q=mycard;unsigned int keycode;while(1){ if((keycode=all_key())==DOWN_ARROW&&i<=0){i=i+1;y=y+60;setcolor(WHITE);rectangle(x,y-60,x+40,y-10);setcolor(GREEN);rectangle(x,y,x+40,y+50); }if(keycode==UP_ARROW&&i>0){i=i-1;y=y-60;setcolor(WHITE);rectangle(x,y+60,x+40,y+110);setcolor(GREEN);rectangle(x,y,x+40,y+50);line(535,85+j*50,625,85+j*50);}if(keycode==RIGHT_ARROW&&j<=6){j=j+1;x=x+50;setcolor(WHITE);rectangle(x-50,y,x-10,y+50);setcolor(GREEN);rectangle(x,y,x+40,y+50); }if(keycode==LEFT_ARROW&&j>0){j=j-1;x=x-50;setcolor(WHITE);rectangle(x+50,y,x+90,y+50);setcolor(GREEN);rectangle(x,y,x+40,y+50); }if(keycode==DELETE){break; }}mycard[0]=i;mycard[1]=j;return q;}q=loca_card(int &x,int &y); 這句 expression syntax錯誤 為啥呢
2 回答
慕標(biāo)5832272
TA貢獻1966條經(jīng)驗 獲得超4個贊
函數(shù)要先聲明后才能使用。
你在寫q=loca_card(int &x,int &y); 這條語句的時候，編譯器還不知道loca_card(int &x,int &y)這個函數(shù)。你可以把你的這條語句放到最后來寫，或者在這條語句之前加上函數(shù)聲明int *loca_card(int &x,int &y);
交互式愛情
TA貢獻1712條經(jīng)驗 獲得超3個贊
一、C語言中Expression syntax in function main 的意思是在主函數(shù)當(dāng)中表達式語法錯誤。
二、下面為C語言的錯誤大全及中文解釋：
1: Ambiguous operators need parentheses — 不明確的運算需要用括號括起
2: Ambiguous symbol xxx — 不明確的符號
3: Argument list syntax error — 參數(shù)表語法錯誤
4: Array bounds missing — 丟失數(shù)組界限符
5: Array size toolarge — 數(shù)組尺寸太大
6: Bad character in paramenters — 參數(shù)中有不適當(dāng)?shù)淖址?br/>7: Bad file name format in include directive — 包含命令中文件名格式不正確
8: Bad ifdef directive synatax — 編譯預(yù)處理ifdef有語法錯
9: Bad undef directive syntax — 編譯預(yù)處理undef有語法錯
10: Bit field too large — 位字段太長
11: Call of non-function — 調(diào)用未定義的函數(shù)
12: Call to function with no prototype — 調(diào)用函數(shù)時沒有函數(shù)的說明
13: Cannot modify a const object — 不允許修改常量對象
14: Case outside of switch — 漏掉了case 語句
15: Case syntax error — Case 語法錯誤
16: Code has no effect — 代碼不可能執(zhí)行到
17: Compound statement missing{ — 分程序漏掉"{"
18: Conflicting type modifiers — 不明確的類型說明符
19: Constant expression required — 要求常量表達式
20: Constant out of range in comparison — 在比較中常量超出范圍
21: Conversion may lose significant digits — 轉(zhuǎn)換時會丟失意義的數(shù)字
22: Conversion of near pointer not allowed — 不允許轉(zhuǎn)換近指針
23: Could not find file xxx — 找不到XXX文件
24: Declaration missing ; — 說明缺少"；"
25: Declaration syntax error — 說明中出現(xiàn)語法錯誤
26: Default outside of switch — Default 出現(xiàn)在switch語句之外
27: Define directive needs an identifier — 定義編譯預(yù)處理需要標(biāo)識符
28: Division by zero — 用零作除數(shù)
29: Do statement must have while — Do-while語句中缺少while部分
30: Enum syntax error — 枚舉類型語法錯誤
31: Enumeration constant syntax error — 枚舉常數(shù)語法錯誤
32: Error directive :xxx — 錯誤的編譯預(yù)處理命令
33: Error writing output file — 寫輸出文件錯誤
34: Expression syntax error — 表達式語法錯誤
35: Extra parameter in call — 調(diào)用時出現(xiàn)多余錯誤
36: File name too long — 文件名太長
37: Function call missing ) — 函數(shù)調(diào)用缺少右括號
38: Fuction definition out of place — 函數(shù)定義位置錯誤
39: Fuction should return a value — 函數(shù)必需返回一個值
40: Goto statement missing label — Goto語句沒有標(biāo)號
41: Hexadecimal or octal constant too large — 16進制或8進制常數(shù)太大
42: Illegal character x — 非法字符x
43: Illegal initialization — 非法的初始化
44: Illegal octal digit — 非法的8進制數(shù)字 A
45: Illegal pointer subtraction — 非法的指針相減
46: Illegal structure operation — 非法的結(jié)構(gòu)體操作
47: Illegal use of floating point — 非法的浮點運算
48: Illegal use of pointer — 指針使用非法
49: Improper use of a typedefsymbol — 類型定義符號使用不恰當(dāng)
50: In-line assembly not allowed — 不允許使用行間匯編
51: Incompatible storage class — 存儲類別不相容
52: Incompatible type conversion — 不相容的類型轉(zhuǎn)換
53: Incorrect number format — 錯誤的數(shù)據(jù)格式
54: Incorrect use of default — Default使用不當(dāng)
55: Invalid indirection — 無效的間接運算
56: Invalid pointer addition — 指針相加無效
57: Irreducible expression tree — 無法執(zhí)行的表達式運算
58: Lvalue required — 需要邏輯值0或非0值
59: Macro argument syntax error — 宏參數(shù)語法錯誤
60: Macro expansion too long — 宏的擴展以后太長
61: Mismatched number of parameters in definition — 定義中參數(shù)個數(shù)不匹配
62: Misplaced break — 此處不應(yīng)出現(xiàn)break語句
63: Misplaced continue — 此處不應(yīng)出現(xiàn)continue語句
64: Misplaced decimal point — 此處不應(yīng)出現(xiàn)小數(shù)點
65: Misplaced elif directive — 不應(yīng)編譯預(yù)處理elif
66: Misplaced else — 此處不應(yīng)出現(xiàn)else
67: Misplaced else directive — 此處不應(yīng)出現(xiàn)編譯預(yù)處理else
68: Misplaced endif directive — 此處不應(yīng)出現(xiàn)編譯預(yù)處理endif
69: Must be addressable — 必須是可以編址的
70: Must take address of memory location — 必須存儲定位的地址
71: No declaration for function xxx — 沒有函數(shù)xxx的說明
72: No stack — 缺少堆棧
73: No type information — 沒有類型信息
74: Non-portable pointer assignment — 不可移動的指針（地址常數(shù)）賦值
75: Non-portable pointer comparison — 不可移動的指針（地址常數(shù)）比較
76: Non-portable pointer conversion — 不可移動的指針（地址常數(shù)）轉(zhuǎn)換
77: Not a valid expression format type — 不合法的表達式格式
78: Not an allowed type — 不允許使用的類型
79: Numeric constant too large — 數(shù)值常太大
80: Out of memory — 內(nèi)存不夠用
81: Parameter xxx is never used — 能數(shù)xxx沒有用到
82: Pointer required on left side of -> — 符號->的左邊必須是指針
83: Possible use of xxx before definition — 在定義之前就使用了xxx（警告）
84: Possibly incorrect assignment — 賦值可能不正確
85: Redeclaration of xxx — 重復(fù)定義了xxx
86: Redefinition of xxx is not identical — xxx的兩次定義不一致
87: Register allocation failure — 寄存器定址失敗
88: Repeat count needs an lvalue — 重復(fù)計數(shù)需要邏輯值
89: Size of structure or array not known — 結(jié)構(gòu)體或數(shù)給大小不確定
90: Statement missing ; — 語句后缺少"；"
91: Structure or union syntax error — 結(jié)構(gòu)體或聯(lián)合體語法錯誤
92: Structure size too large — 結(jié)構(gòu)體尺寸太大
93: Sub scripting missing ] — 下標(biāo)缺少右方括號
94: Superfluous & with function or array — 函數(shù)或數(shù)組中有多余的"&"
95: Suspicious pointer conversion — 可疑的指針轉(zhuǎn)換
96: Symbol limit exceeded — 符號超限
97: Too few parameters in call — 函數(shù)調(diào)用時的實參少于函數(shù)的參數(shù)不
98: Too many default cases — Default太多(switch語句中一個)
99: Too many error or warning messages — 錯誤或警告信息太多
100: Too many type in declaration — 說明中類型太多
101: Too much auto memory in function — 函數(shù)用到的局部存儲太多
102: Too much global data defined in file — 文件中全局數(shù)據(jù)太多
103: Two consecutive dots — 兩個連續(xù)的句點
104: Type mismatch in parameter xxx — 參數(shù)xxx類型不匹配
105: Type mismatch in redeclaration of xxx — xxx重定義的類型不匹配
106: Unable to create output file xxx — 無法建立輸出文件xxx
107: Unable to open include file xxx — 無法打開被包含的文件xxx
108: Unable to open input file xxx — 無法打開輸入文件xxx
109: Undefined label xxx — 沒有定義的標(biāo)號xxx
110: Undefined structure xxx — 沒有定義的結(jié)構(gòu)xxx
111: Undefined symbol xxx — 沒有定義的符號xxx
112: Unexpected end of file in comment started on line xxx — 從xxx行開始的注解尚未結(jié)束文件不能結(jié)束
113: Unexpected end of file in conditional started on line xxx — 從xxx 開始的條件語句尚未結(jié)束文件不能結(jié)束
114: Unknown assemble instruction — 未知的匯編結(jié)構(gòu)
115: Unknown option — 未知的操作
116: Unknown preprocessor directive: xxx — 不認識的預(yù)處理命令xxx
117: Unreachable code — 無路可達的代碼
118: Unterminated string or character constant — 字符串缺少引號
119: User break — 用戶強行中斷了程序
120: Void functions may not return a value — Void類型的函數(shù)不應(yīng)有返回值
121: Wrong number of arguments — 調(diào)用函數(shù)的參數(shù)數(shù)目錯
122: xxx not an argument — xxx不是參數(shù)
123: xxx not part of structure — xxx不是結(jié)構(gòu)體的一部分
124: xxx statement missing ( — xxx語句缺少左括號
125: xxx statement missing ) — xxx語句缺少右括號
126: xxx statement missing ; — xxx缺少分號
127: xxx declared but never used — 說明了xxx但沒有使用
128: xxx is assigned a value which is never used — 給xxx賦了值但未用過
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