Compilare: user.c: In function ‘main’: user.c:28:24: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] for( i=(1+col)/2+(1-col&1); i<=col && ok==0; i++ ){ ^ user.c:29:34: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if( rk1[i- ( (1+col)/2+(1-col&1)-1 ) ] == rk1[i] - rk1[(1+col)/2+(1-col&1)-1] ^ user.c:29:76: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if( rk1[i- ( (1+col)/2+(1-col&1)-1 ) ] == rk1[i] - rk1[(1+col)/2+(1-col&1)-1] ^ user.c:30:37: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] && rk2[i- ( (1+col)/2+(1-col&1)-1 )] == rk2[i] - rk2[(1+col)/2+(1-col&1)-1] ) ^ user.c:30:78: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] && rk2[i- ( (1+col)/2+(1-col&1)-1 )] == rk2[i] - rk2[(1+col)/2+(1-col&1)-1] ) ^ user.c:13:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d ", &lin, &col ); ^