Compilare: user.c: In function ‘main’: user.c:32:9: warning: implicit declaration of function ‘abs’ [-Wimplicit-function-declaration] if((abs(se[i]-min))<(abs(smin-min)) && se[i]!=min) { ^ user.c:5:26: warning: unused variable ‘sm’ [-Wunused-variable] int i,j,cn,si,sp,m,n,sm,min,max,maxi,mini,smin,smax,imin,imax; ^ user.c:5:19: warning: unused variable ‘sp’ [-Wunused-variable] int i,j,cn,si,sp,m,n,sm,min,max,maxi,mini,smin,smax,imin,imax; ^ user.c:5:16: warning: unused variable ‘si’ [-Wunused-variable] int i,j,cn,si,sp,m,n,sm,min,max,maxi,mini,smin,smax,imin,imax; ^ user.c:5:13: warning: unused variable ‘cn’ [-Wunused-variable] int i,j,cn,si,sp,m,n,sm,min,max,maxi,mini,smin,smax,imin,imax; ^ user.c:7:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.c:9:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&se[i]); ^ user.c:13:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&ex[i]); ^ user.c:49:16: warning: ‘imax’ may be used uninitialized in this function [-Wmaybe-uninitialized] ex[maxi]=se[imax]; ^ user.c:50:16: warning: ‘imin’ may be used uninitialized in this function [-Wmaybe-uninitialized] ex[mini]=se[imin]; ^