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cformat-specifiers

C printf array int matching format


This c code

int rhdDEboard2(){

    int board[64]={0};
    int rc;
    printf("\n");
    for (rc=0;rc<8;rc++)
        printf("\t %i %i %i %i %i %i %i %i\n",board[rc]);
    printf("\n");
    return 0;
}

compiled with MinGW in Win8 PC gives this error: : warning: format '%i' expects a matching 'int' argument [-Wformat]

I do not understand why! The board array is declared as type int..isn't it? (Does C treat the array as a pointer type?). I have tried using %p as format specifier but that doesn't work and nor does using %d. I understand what the warning says, but not why it says it, nor how to fix it, and feel I must be missing something quite basic, simple and straightforward here, but I do not understand this compiler warning.I'm grateful for help to try and get me to understand this C compiler warning and how I should fix it..many thanks


Solution

  • As commenters mentioned, you should try any of the way.

    int rhdDEboard2() {
    
        int board[64]={0};
        int i,j;
        printf("\n");
        for (i=0;i<8;i++) {
            printf("\t");
            for(j=0;j<8;j++)
                printf(" %i",board[(i*8)+j]);
            printf("\n");
        }
        printf("\n");
        return 0;
    }
    

    or

    int rhdDEboard2() {
    
        int board[64]={0};
        int rc;
        printf("\n");
        for (rc=0; rc<64; rc+=8)
            printf("\t %i %i %i %i %i %i %i %i\n",
                    board[rc]  ,board[rc+1],board[rc+2],board[rc+3],
                    board[rc+4],board[rc+5],board[rc+6],board[rc+7] );
        printf("\n");
        return 0;
    }