Question

I’m trying to make a struct that generates a random matrix and am getting “error: expected â=â, â,â, â;â, âasmâ or â_attribute_â before âmatrixâ” when compiling. How can I get this to work effectively and efficiently?

I guess expected errors usually are caused by typos but I don’t see any.

I’m very new to C so pointers and malloc are quite foreign to me. I really appreciate your help.

/* It's called RandomMatrixMaker.c */

#include <stdio.h>
#include <stdlib.h>

typdef struct {
  char* name;
  int MID;
  int MRows;
  int MCols;
  long[][]* MSpace;
} matrix;

matrix makeRIDMatrix(char* name, int MID, int MRows, int MCols) {
  matrix m;
  static int i, j, r;
  m.name = name;
  m.MID = MID;
  m.MRows = MRows;
  m.MCols = MCols;
  for (i=0; i<m.MRows; i++) {
    for (j=0; i<m.MCols; j++) {
      r = random(101);
      *(m.MSpace[i][j]) = r; 
    }
  }
  return m;
}

int main(void) {
  makeRIDMatrix("test", 1, 10, 10);
  return 0;
}

Answer 1

There is indeed a typo. You misspelled typedef:

typdef struct {

should be:

typedef struct {

EDIT:

Also, there’s no reason to use static here:

static int i, j, r;

You can just get rid of the static modifier.

int i, j, r;