Compilare: user.c: In function ‘main’: user.c:19:9: warning: implicit declaration of function ‘memset’ [-Wimplicit-function-declaration] memset(vf1,0,sizeof(vf1)); ^ user.c:19:9: warning: incompatible implicit declaration of built-in function ‘memset’ [enabled by default] user.c:8:39: warning: unused variable ‘i1’ [-Wunused-variable] int i,j,n,t,con,x,y,z,min,flag,nr,i1; ^ user.c:8:31: warning: unused variable ‘flag’ [-Wunused-variable] int i,j,n,t,con,x,y,z,min,flag,nr,i1; ^ user.c:11:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&t); ^ user.c:17:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d" ,&n,&p[0]); ^