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POC++ Errors with expected primary-expressions
 

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  1. POC++ Errors with expected primary-expressions
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    <p>There are errors that I am getting with my .cpp code that I just cannot figure out. I believe it is probably a miss-matched bracket or something, but I don't see it. Here is the code and the errors:</p> <p>Errors:</p> <pre><code>C:\Users\Tyler\Desktop\Program 2\p2.cpp:202: error: expected primary-expression before "else" C:\Users\Tyler\Desktop\Program 2\p2.cpp:202: error: expected `;' before "else" C:\Users\Tyler\Desktop\Program 2\p2.cpp:222: error: expected `while' before '(' token C:\Users\Tyler\Desktop\Program 2\p2.cpp:223: error: expected `;' before '{' token C:\Users\Tyler\Desktop\Program 2\p2.cpp:236: error: expected primary-expression before "else" C:\Users\Tyler\Desktop\Program 2\p2.cpp:236: error: expected `;' before "else" C:\Users\Tyler\Desktop\Program 2\p2.cpp: At global scope: C:\Users\Tyler\Desktop\Program 2\p2.cpp:250: error: expected unqualified-id before "while" C:\Users\Tyler\Desktop\Program 2\p2.cpp:250: error: expected `,' or `;' before "while" C:\Users\Tyler\Desktop\Program 2\p2.cpp:251: error: expected unqualified-id before "return" C:\Users\Tyler\Desktop\Program 2\p2.cpp:251: error: expected `,' or `;' before "return" C:\Users\Tyler\Desktop\Program 2\p2.cpp:252: error: expected declaration before '}' token </code></pre> <p>Code:</p> <pre><code>int main() { Stack s; //variable declarations StackItem *newItem; char token, nextChar, prevChar, response, check; int lineCount, apostCount; char filename[50]; bool insideComment = false, insideString = false, error, isMatch, delimError = false; fstream sourceFile; do //do while response is y { do //do while opening the source file fails { cout &lt;&lt; "Enter filename of source file: "; cin.getline (filename,51); sourceFile.open(filename); //opens the file with given filename if (sourceFile.fail()) cout &lt;&lt; "File could not be opened" &lt;&lt; endl; //error if can't open sourceFile.clear(); } while (sourceFile.fail()); //exits if source file doesn't fail sourceFile.clear(); lineCount = 0; //initializes line count to zero while (!sourceFile.eof()) //exits if end of source file is reached { sourceFile.get(nextChar); //gets the next character in file if (!sourceFile.eof()) //if not the end of source file { if ((int)nextChar == '\n') //if next character is an end line { lineCount++; //increments line count cout &lt;&lt; "Line count: " &lt;&lt; lineCount &lt;&lt; endl; //echoes line count } else if (nextChar == '{' || nextChar == '[' || nextChar == '(') { //continues if next char is an opening token newItem-&gt;token = nextChar; //sets newItem's token newItem-&gt;lineNumber = lineCount; //sets newItem's line count if (!s.isFull()) //continues if stack isn't full s.push(newItem); //pushes newItem onto the stack s.displayStack(); //displays the stack } else if (nextChar == '}' || nextChar == ']' || nextChar == ')') { //continues if next char is a closing token if (!s.isEmpty()) //continues if stack isn't empty { isMatch = s.matchStack(nextChar); //checks if token matches top if (isMatch == true) //if true, pops the top of the stack s.pop(); else //continues if match is false { newItem-&gt;token = nextChar; //sets newItem's token newItem-&gt;lineNumber = lineCount; //sets newITem's line count s.trailingItem(newItem); //calls the trailingItem function cout &lt;&lt; endl &lt;&lt; endl &lt;&lt; "Process another file? (y/n): "; cin &gt;&gt; response; //asks user whether to continue while (response != 'y' &amp;&amp; response != 'n') //checks for input error { cout &lt;&lt; "Error! Must enter either y for yes or n for no." &lt;&lt; endl; cout &lt;&lt; endl &lt;&lt; endl &lt;&lt; "Process another file? (y/n): "; cin &gt;&gt; response; } break; //leaves the while loop } } else if (s.isEmpty()) //continues if stack is empty { newItem-&gt;token = nextChar; //sets newItem's token newItem-&gt;lineNumber = lineCount; //sets newItem's line count s.push(newItem); //pushes newItem onto the top of the stack s.processStack(); //processes the error cout &lt;&lt; endl &lt;&lt; endl &lt;&lt; "Process another file? (y/n): "; cin &gt;&gt; response; //asks user whether to continue while (response != 'y' &amp;&amp; response != 'n') //checks for input error { cout &lt;&lt; "Error! Must enter either y for yes or n for no." &lt;&lt; endl; cout &lt;&lt; endl &lt;&lt; endl &lt;&lt; "Process another file? (y/n): "; cin &gt;&gt; response; //gets user input } break; //leaves the while loop } s.displayStack(); //displays the items on the stack } else if (nextChar == '/') //continues if next char is a / { sourceFile.get(nextChar); //gets the next character in file if (nextChar == '*') //continues if next char is a * { //at this point a comment has started because of / then * insideComment = true; //sets bool to true newItem-&gt;token = 'c'; //sets newItem's token to c for "comment" newItem-&gt;lineNumber = lineCount; //sets newItem's line count s.push(newItem); //pushes the item onto the stack while (insideComment == true &amp;&amp; !sourceFile.eof()) { //continues while inside a comment and end of file isn't reached sourceFile.get(nextChar); //gets the next character in file if (nextChar == '*') //continues if next char is * { sourceFile.get(nextChar); //gets the next character in file if (nextChar == '/') //continues if next char is / { //at this point the comment has ended because of * then / insideComment = false; //sets bool to false s.pop(); //pops off the c in the stack } } } } else if (nextChar == '/') //continues if next char is a / { //at this point a comment has started because of / then another / insideComment = true; //sets bool to true while (insideComment == true &amp;&amp; !sourceFile.eof()) { //continues while inside a comment and not at end of file sourceFile.get(nextChar); //gets the next character in file if (nextChar == '\n') //leaves comment if next line is entered insideComment = false; //sets bool to false } } } else if (nextChar == '\n') //continues if next char is an end line { lineCount++; //increments line count cout &lt;&lt; "Line count: " &lt;&lt; lineCount &lt;&lt; endl; //echoes line count } else if (nextChar == '\"' &amp;&amp; insideComment == false) { //continues if next char is a " and is not currently inside a comment insideString = true; //sets bool to true b/c " starts a string while (insideString == true &amp;&amp; !sourceFile.eof()) { sourceFile.get(nextChar); //gets the next character in file if (nextChar == '\"') insideString = false; else if (nextChar == '\n') { lineCount++; //increments line count cout &lt;&lt; "Line count: " &lt;&lt; lineCount &lt;&lt; endl; //echoes line count } } } else if (nextChar == '\'' &amp;&amp; insideComment == false &amp;&amp; insideString == false) { //continues if next char is a ' and not in a comment or string apostCount = 1; //initializes apostrophe count (chars after first apostrophe) while (nextChar != '\'' &amp;&amp; !sourceFile.eof()) { //continues while next char isn't another ' and not end of file sourceFile.get(nextChar); //gets the next character in file apostCount++; //increments apostrophe count if (nextChar == '\\') //continues if next char is a \ { sourceFile.get(nextChar); //gets the next character in file apostCount++; //increments apostrophe count if (nextChar == '\'' &amp;&amp; apostCount &lt;= 3) //must be less than/= 3 spaces nextChar = ' '; //sets next char to space if another apostrophe } else if (nextChar == '\n') //continues if next char is an end line { lineCount++; //increments line count cout &lt;&lt; "Line count: " &lt;&lt; lineCount &lt;&lt; endl; //echoes line count } } if (apostCount &gt;= 4) //if more than 3 chars come after apostrophe { //displays delimeter error cout &lt;&lt; "Character delimeter error on line " &lt;&lt; lineCount &lt;&lt; endl; delimError = true; break; //leaves while loop after displaying error } if (delimError == true) //continues if delimiter error occured break; //leaves 2nd while loop } } } //end of while loop if (s.isEmpty() == false) //continues if no errors within stack { //displays successful nesting structure to user cout &lt;&lt; "Source file of " &lt;&lt; lineCount &lt;&lt; " lines has proper nesting structure"; cout &lt;&lt; endl &lt;&lt; endl &lt;&lt; "Process another file? (y/n): "; //asks to continue cin &gt;&gt; response; //gets user's response while (response != 'y' &amp;&amp; response != 'n') //checks for input error { cout &lt;&lt; "Error! Must enter either y for yes or n for no." &lt;&lt; endl; cout &lt;&lt; endl &lt;&lt; endl &lt;&lt; "Process another file? (y/n): "; cin &gt;&gt; response; //gets user input } } else //continues if errors are present { s.processStack(); //processes and displays the delimiter errors cout &lt;&lt; endl &lt;&lt; endl &lt;&lt; "Process another file? (y/n): "; //asks to continue cin &gt;&gt; response; //gets user's response while (response != 'y' &amp;&amp; response != 'n') //checks for input error { cout &lt;&lt; "Error! Must enter either y for yes or n for no." &lt;&lt; endl; cout &lt;&lt; endl &lt;&lt; endl &lt;&lt; "Process another file? (y/n): "; cin &gt;&gt; response; //gets user input } } } while (response == 'y'); //opens another file if user entered y for yes return 0; //quits program } </code></pre> <p>Please Help!</p>
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    1. USOliver Charlesworth
    1. USTyler Gavin
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    2. VO
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    1. COThat is a **lot** of code for a Stack Overflow question; please consider reducing this to a [minimal test case](http://sscce.org). Could you at least help us out by marking the relevant lines (e.g. line 202) with comments?
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      1. USOliver Charlesworth
    2. COBoy, you *really* take comments seriously! (Unfortunately, code that is actually *interesting*, like `sourceFile.clear()`, has no comment!)
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      1. POC++ Errors with expected primary-expressions
      1. USKerrek SB
    3. COTo expand on Kerrek's point; comments such as "sets bool to false" aren't helpful, because they just take up screen space, and tell the reader nothing that isn't obvious from the corresponding code.
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      1. POC++ Errors with expected primary-expressions
      1. USOliver Charlesworth
 

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