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cexc-bad-access

EXC_BAD_ACCESS (Code = 1, address = 0x30000008) issue generated


I'm trying to create a code to remove the same elements in arrays. The problem is EXC_BAD_ACCESS (Code = 1, address = 0x30000008) issue. My code is: `

#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main()
{
    srand (time(NULL));
    int i, j, b, c;
    double A[11];
    double B[10];
    char choice;
    for (i = 0; i < 11; i++)
    { 
        A[i] = rand () %100;
    } 
        
    for (j = 0; j < 10; j++)
    {
        B[j] = rand () % 100;
    }

    
    printf("Array A[N]: \n");
        for (i = 0; i < 10; i++)
    {

        printf("%.2lf  ", A[i]);
    }
    printf("\n Array B[M]: \n");
        for (j = 0; j < 10; j++)
    {
        printf("%.2lf  ", B[j]);
    }
    for (i = 0; i < 11; i++)
    {
        for (j = 0; j < 10; i++)
        {
          **  if (A[i]==B[j])
Exception has occurred.
EXC_BAD_ACCESS (code=1, address=0x16fe00000)**
            {
                for (c = j; c < 10; c++)
                {
                    B[c] = B[c+1];
                }
                j--;
            }
        }
    }
    printf("\n New array B[M]: \n");
    for ( j = 0; j < 9; j++)
    {
        printf ("%.2lf", B[c]);
    }
    
    return 0;
}

` Hope for helping. Thank you

I was trying to define N 11 and M 10, so it would work, but, unfortunately, not.


Solution

  • for (c = j; c < 10; c++){
         B[c] = B[c+1];
    }
    j--;
    

    In this part if c = 9 (last iteration), you have B[9] = B[10]; The size of B is 10, so the maximum value of the index has to be 9.

    My solution is the following:

    #include <math.h>
    #include <stdio.h>
    #include <stdlib.h>
    #include <time.h>
    int main()
    {
        srand (time(NULL));
        int i, j, b, c;
        double A[11];
        double B[10];
        char choice;
        for (i = 0; i < 11; i++)
        { 
            A[i] = rand () %100;
        } 
            
        for (j = 0; j < 10; j++)
        {
            B[j] = rand () % 100;
        }
    
        
        printf("Array A[N]: \n");
            for (i = 0; i < 10; i++)
        {
    
            printf("%.2lf  ", A[i]);
        }
        printf("\n Array B[M]: \n");
            for (j = 0; j < 10; j++)
        {
            printf("%.2lf  ", B[j]);
        }
        int max_j = 10;
        for (i = 0; i < 11; i++)
        {
            for (j = 0; j < max_j; j++)
            {
                if (A[i]==B[j])
                {
                    for (c = j; c < max_j-1; c++) {
                        B[c] = B[c+1];
                    }
                    B[max_j-1] = 0;
                    max_j--;
                }
            }
        }
        printf("\n New array B[M]: \n");
        for ( j = 0; j < 9; j++)
        {
            printf ("%.2lf ", B[j]);
        }
        
        return 0;
    }