Compilare: user.c: In function ‘fractii_ireductibile’: user.c:11:29: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(i!=1 && j!=1 && (i%j==0 || j%i==0) || (i%2==0 && j%2==0)) ^ user.c:8:11: warning: unused variable ‘q’ [-Wunused-variable] int p,q,i,j,c=0; ^ user.c:8:9: warning: unused variable ‘p’ [-Wunused-variable] int p,q,i,j,c=0; ^ user.c: In function ‘main’: user.c:24:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^