Compilare: user.c: In function ‘main’: user.c:36:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ user.c:39:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &mat[i][j]); ^ user.c:63:16: warning: ‘mem2’ may be used uninitialized in this function [-Wmaybe-uninitialized] y+=diry[mem2]; ^ user.c:60:32: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(mem[x+dirx[j]][y+diry[j]]+1==mem[x][y]) ^ user.c:60:21: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(mem[x+dirx[j]][y+diry[j]]+1==mem[x][y]) ^