Compilare: user.c: In function ‘main’: user.c:9:86: warning: variable ‘j1’ set but not used [-Wunused-but-set-variable] int n,q,i,j,n1,n2,min,t,p1,p2,l,r,poz,elem,nrelem,st1,dr1,st2,dr2,mij1,mij2,flag,j1,con; ^ user.c:12:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d" ,&n,&q); ^ user.c:14:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&k[i]); ^ user.c:16:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&mat[i][j]); ^ user.c:19:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d%d" ,&t,&p1,&p2); ^