Error Invalid Type For Array Subscript

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Invalid Types For Array Subscript C++

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Invalid Types For Array Subscript Double Int

4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up C Error: invalid types 'double[int]' for array subscript up vote 3 down vote favorite I am creating a

Invalid Types 'int Int ' For Array Subscript Arduino

program to read a file and stores its data in an array and then create a function to compute its derivative, was able to read the files and create the derivative, but when I try to create an external function to calculate the value of derivative of the function I encounter the following error: "[error] invalid types 'double [int]' for array subscript" Ja tried to solve it in different ways, but without invalid types for array subscript char int success. #include "biblioteca.h" int main(){ FILE* fp; fp = fopen("entrada.txt","rt"); if (fp == NULL) { printf("Erro na abertura do arquivo!\n"); exit(1); } int i; //grau do polinomio fscanf(fp,"%d",&i); printf("i = [%d]\n",i); double mat[i-1][i+1]; int c=0; //colunas while(c0;c--){ mat[l+1][c-1]=mat[l][c]*(h-k); k++; } h--; } int k=0; //linhas while(k #include #include double f(double mat,int i,int t,double x){ double x1=0; for(int g=0;g double f(int i, double mat[i-1][i+1], int t,double x){ –BLUEPIXY Nov 20 '14 at 21:37 1 and call x1=f(i, mat, 1, x); BTW when double x[A][B], must be 1st index < A. I seems that your code is to be often beyond the range. –BLUEPIXY Nov 20 '14 at 21:42 add a comment| 1 Answer 1 active oldest votes up vote 0 down vote accepted When you call f function, you pass double mat as argument. That passes

here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business invalid types char int for array subscript c++ Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs invalid types double int for array subscript c++ Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just invalid types for array subscript arduino like you, helping each other. Join them; it only takes a minute: Sign up c++ error: invalid types int int for array subscript up vote 3 down vote favorite Trying to learn C++ and working through a http://stackoverflow.com/questions/27049177/c-error-invalid-types-doubleint-for-array-subscript simple exercise on arrays. Basically, I've created a multidimensional array and I want to create a function that prints out the values. The commented for-loop within Main() works fine, but when I try to turn that for-loop into a function, it doesn't work and for the life of me, I cannot see why. #include using namespace std; void printArray(int theArray[], int numberOfRows, int numberOfColumns); int main() { int sally[2][3] = {{2,3,4},{8,9,10}}; printArray(sally,2,3); // for(int http://stackoverflow.com/questions/6165449/c-error-invalid-types-int-int-for-array-subscript rows = 0; rows < 2; rows++){ // for(int columns = 0; columns < 3; columns++){ // cout << sally[rows][columns] << " "; // } // cout << endl; // } } void printArray(int theArray[], int numberOfRows, int numberOfColumns){ for(int x = 0; x < numberOfRows; x++){ for(int y = 0; y < numberOfColumns; y++){ cout << theArray[x][y] << " "; } cout << endl; } } c++ share|improve this question edited May 29 '11 at 2:09 Lightness Races in Orbit 217k35335583 asked May 29 '11 at 1:38 Rick 97126 add a comment| 3 Answers 3 active oldest votes up vote 5 down vote accepted C++ inherits its syntax from C, and tries hard to maintain backward compatibility where the syntax matches. So passing arrays works just like C: the length information is lost. However, C++ does provide a way to automatically pass the length information, using a reference (no backward compatibility concerns, C has no references): template void printArray(int (&theArray)[numberOfRows][numberOfColumns]) { for(int x = 0; x < numberOfRows; x++){ for(int y = 0; y < numberOfColumns; y++){ cout << theArray[x][y] << " "; } cout << endl; } } Demonstration: http://ideone.com/MrYKz Here's a variation that avoids the complicated array reference syntax: http://ideone.com/GVkxk If the size is dynamic, you can't use either template version. You just need to know

a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings http://arduino.stackexchange.com/questions/20574/error-invalid-types-intint-for-array-subscript and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Arduino beta Questions https://www.daniweb.com/programming/software-development/threads/368309/invalid-type-for-array-subscript Tags Users Badges Unanswered Ask Question _ Arduino Stack Exchange is a question and answer site for developers of open-source hardware and software that is compatible with Arduino. Join invalid type them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Error: invalid types 'int[int]' for array subscript up vote 1 down vote favorite I am trying to get an Arduino to work with some Adafruit Motor shields. for array subscript Everything seemed to work fine, but when I tried to create a function, I get the error in the subject. As far as I can tell, everything was declared properly (the array is initialized and is indexed elsewhere with without issue). Only the function seems to cause an issue. Would anyone have a guess at what's wrong? //////// Imports #include #include #include "utility/Adafruit_PWMServoDriver.h" ////////My globals. Times are in milliseconds unsigned long currentTime = 0; unsigned long elapsedTime = 0; unsigned long startTime = 0; byte currentMotor = 1; byte currentShield = 1; byte motorRunning = 0; //// Settings // How many seconds between motors unsigned long endTime = 4000; // How many shields and motors per shield const int nShields = 1; const int nMotorsPerShield = 3; /////////MicroManager globals unsigned int version_ = 2; const unsigned long timeOut_ = 1000; byte currentPattern_ = 0; unsigned long time; /////////Adafruit globals Adafruit_MotorShield afms[nShields]; Adafruit_DCMotor *motor[nShields][nMotorsPerShield]; ////////////Setup void setup() { Serial.begin(57600); unsigned char address = 96; for (int i = 0; i

the following lines w/ red font. It says invalid types 'int[int]' for array subscript... pls help I'm not sure how to solve this. *********This is actually how my program works********* Read in a line of text and output the number of words in the line and the number of occurrence of each letter. Output the letters in alphabetical order (e.g) I say Hi. Should produce output similar to the ffg: 3 words 1 a 1 h 2 i 1 s 1 y i SAY hI Before asking for the choices the user should prompt to enter a password (3 tries only). If the user try to enter 3 incorrect password the program will be terminated. Also, ask the user to repeat the process. #include #include #include #include #include #include #include using namespace std; int main() { string str; char alphaLet[26] = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'}; int ctr, ctc; int numChar = 0, numWrd = 1; int ctrLet; cout << "Input Valid Sentence:\n"; getline(cin,str); numChar = str.length(); for(ctr = 0; ctr < numChar; ctr++) { if(str.at(ctr) == ' ') numWrd++; } cout << "\nWords: " << numWrd << endl; for(ctr = 0; ctr < numChar; ctr++) { for(ctc = 0; ctc < 26; ctc++) { if(str.at(ctr) == alphaLet[ctc]) ctrLet[ctc]++; } } for(ctr = 0; ctr < 26; ctr++) { if(ctrLet[ctr] > 0) cout << ctrLet[ctr] << " " << alphaLet[ctr] << endl; } cout << "\n\n"; for(ctr = 0; ctr < numChar; ctr++) { if(isupper(str.at(ctr))) (str.at(ctr))=tolower(str.at(ctr)); else if(islower(str.at(ctr))) (str.at(ctr))=toupper(str.at(ctr)); } cout << endl << str; cout << "\n\n"; system ("pause"); return 0; } king03 183 posts since Mar 2011 Community Member 3Contributors 4Replies 5Views 5 YearsDiscussion Span 5 Years Ago Last Post by Arbus 0 Narue 5,707 5 Years Ago >ctrLet[ctc]++; ctc is an int, which is fine. But ctrLet is also an int. The int type does not support indexing. 0 Arbus 25 5 Years Ago int ctrLet; if(ctrLet[ctr] > 0) cout << ctrLet[ctr] << " " << alphaLet[ctr] << endl; ctrlet is an integer and it is not declared as an array. 0 Discus