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#include <stdio.h>
 
int main(void) 
#define INF 9999
{
    int arr[4][4] ;
    int cost[4][4] = {
                        7, 5, 0, 0,
                        7, 0, 0, 2,
                        0, 3, 0, 0,
                        4, 0, 1, 0
                    } ;
    int i, j, k, n = 4 ;
 
    clrscr( ) ;
 
    for ( i = 0 ; i < n ; i++ )
    {
        for ( j = 0; j < n ; j++ )
        {
            if ( cost[i][j] == 0 )
                arr[i][j] = INF ;
            else
                arr[i][j] = cost[i][j] ;
        }
    }
 
    printf ( "Adjacency matrix of cost of edges:\n" ) ;
    for ( i = 0 ; i < n ; i++ )
    {
        for ( j = 0; j < n ; j++ )
            printf ( "%d\t", arr[i][j] ) ;
        printf ( "\n" ) ;
    }
 
    for ( k = 0 ; k < n ; k++ )
    {
        for ( i = 0 ; i < n ; i++ )
        {
            for ( j = 0 ; j < n ; j++ )
            {
                if ( arr[i][j] > arr[i][k] + arr[k][j] )
                    arr[i][j] = arr[i][k] + arr[k][j];
            }
        }
    } printf ( "\nAdjacency matrix of lowest cost between the vertices:\n" ) ;
    for ( i = 0 ; i < n ; i++ )
    {
        for ( j = 0; j < n ; j++ )
            printf ( "%d\t", arr[i][j] ) ;
        printf ( "\n" ) ;
    }
 
    getch( ) ;
}
 

prog.c: In function ‘main’:
prog.c:7:22: warning: missing braces around initializer [-Wmissing-braces]
     int cost[4][4] = {
                      ^
prog.c:7:22: note: (near initialization for ‘cost’)
prog.c:15:5: warning: implicit declaration of function ‘clrscr’ [-Wimplicit-function-declaration]
     clrscr( ) ;
     ^~~~~~
prog.c:54:5: warning: implicit declaration of function ‘getch’ [-Wimplicit-function-declaration]
     getch( ) ;
     ^~~~~
/home/trjvrH/cchVk7gi.o: In function `main':
prog.c:(.text.startup+0x97): undefined reference to `clrscr'
prog.c:(.text.startup+0x1b9): undefined reference to `getch'
collect2: error: ld returned 1 exit status

Standard output is empty