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void parse(char* str) { int left = 0, right = 0; intlen = strlen(str); while (right <= len&& left <= right) { if (isDelimiter(str[right]) == false) right++; if (isDelimiter(str[right]) == true && left == right) { if (isOperator(str[right]) == true) printf("'%c' IS AN OPERATOR\n", str[right]); right++; left = right; } else if (isDelimiter(str[right]) == true && left != right || (right == len&&left != right)) { char* subStr = subString(str, left, right - 1); if (isKeyword(subStr) == true) printf("'%s' IS A KEYWORD\n", subStr); else if (isInteger(subStr) == true) printf("'%s' IS AN INTEGER\n", subStr); else if (isRealNumber(subStr) == true) printf("'%s' IS A REAL NUMBER\n", subStr); else if (validIdentifier(subStr) == true &&isDelimiter(str[right - 1]) == false) printf("'%s' IS A VALID IDENTIFIER\n", subStr); else if (validIdentifier(subStr) == false &&isDelimiter(str[right - 1]) == false) printf("'%s' IS NOT A VALID IDENTIFIER\n", subStr); left = right; } } return; }
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