Warning: assignment makes integer from pointer without a cast

Question

I am trying to sort the elements in a 2d array ,but in assigning the value to k it is giving this error.

"warning: assignment makes integer from pointer without a cast".

Why am I getting it and how can I resolve it?

for(i=1;i<3;++i)
    {
        for(j=3-1;j>=1;--j)
           {
                if(a[j-1]>a[j])
                   {
                         k = a[j-1];
                          a[j-1]=a[j];
                         a[j] = k;
                   }
           }
     }

Whatever you do, the solution is NOT adding a cast! The warning is poorly worded ... I think it should have just said: "warning: assigning a pointer to an integer" ommiting the word 'cast' — pmg
– pmg, Commented Sep 12, 2011 at 10:59

taskinoor · Accepted Answer · 2011-09-12 11:39:03Z

5

You have missed one index in accessing the element. a[j], a[j-1] should be a[i][j], a[i][j-1] in all places. a[i] is the pointer to the first element of i-th row in a 2D array. a[i][j] is the element at index i, j.

Note: Though not specified in the question, I am almost sure that i, j, k are integers and a is a 2D integer array.

edited Sep 12, 2011 at 11:39

answered Sep 12, 2011 at 8:00

taskinoor

46.1k13 gold badges118 silver badges143 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Peter Lawrey Over a year ago

+1: You accessing a 2D array as if it were a 1D array. Doing this gives you a pointer rather than an element of the array.

barakc · Accepted Answer · 2011-09-12 10:54:49Z

1

The warning is around unsafe conversion from pointer to integer in one of the assignment statements. It could be any of the statements in your code. You should provide the variable type declaration in order to detect where the warning comes from.

answered Sep 12, 2011 at 10:54

barakc

111 bronze badge

Collectives™ on Stack Overflow

Warning: assignment makes integer from pointer without a cast

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related