2 dimensional dynamic array SEG FAULT!

This is a discussion on 2 dimensional dynamic array SEG FAULT! within the C Programming forums, part of the General Programming Boards category; I am getting a Seg Fault on the 2 lines denoted below. Any ideas why i am getting a seg ...

  1. #1
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    2 dimensional dynamic array SEG FAULT!

    I am getting a Seg Fault on the 2 lines denoted below. Any ideas why i am getting a seg fault? Any help would be amazing! thanks.

    Code:
            int** pathArry;
            int i;
            int count;
    
    
            printf("-----Allocating Memory-----\n");
            pathArry = (int**)malloc(arry1Max * sizeof(int*));
            for (int i = 0; i < arry1Max; i++)
            {
              pathArry[i] = (int*)malloc(arry2Max * sizeof(int));
            }
    
    
            printf("-----Calculating Paths-----\n");
            count = 0;
            do{
                    for (i = 0; i <= cities;i++){
                            if (i == cities){
                                    pathArry[count][i] = 0; // SEGFAULT
                            }else{
                                    pathArry[count][i] = nodes[i]; // SEGFAULT
                            }
                    }
                    count++;
            } while (next_permutation(nodes+1,nodes+cities));

  2. #2
    qny
    qny is offline
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    What's the relation between arry2Max and cities?
    Have you include <stdlib.h>? The cast to the return value of malloc makes me suspect you haven't. Make sure you have the include and lose the cast.
    You should also test whether the allocation succeeded.

    Do you get a segfault when both count and i are 0?

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