Compilare: user.c: In function ‘main’: user.c:31:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(vf[l[i-1][j]+1][c[i-1][j]]==0) ^ user.c:44:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(vf[l[i-1][j]][c[i-1][j]+1]==0) ^ user.c:12:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d" ,&n,&m); ^