Compilare: user.cpp: In function ‘int fill(int, int)’: user.cpp:22:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:25:46: warning: unused variable ‘e’ [-Wunused-variable] int ri=0,gi=0,bi=0,m,n,i,j,minim=INT_MAX,e,w,l1,c1,pi,ps,k,o,o1,ok=0,nr=0; ^ user.cpp:25:48: warning: unused variable ‘w’ [-Wunused-variable] int ri=0,gi=0,bi=0,m,n,i,j,minim=INT_MAX,e,w,l1,c1,pi,ps,k,o,o1,ok=0,nr=0; ^ user.cpp:25:50: warning: unused variable ‘l1’ [-Wunused-variable] int ri=0,gi=0,bi=0,m,n,i,j,minim=INT_MAX,e,w,l1,c1,pi,ps,k,o,o1,ok=0,nr=0; ^ user.cpp:25:53: warning: unused variable ‘c1’ [-Wunused-variable] int ri=0,gi=0,bi=0,m,n,i,j,minim=INT_MAX,e,w,l1,c1,pi,ps,k,o,o1,ok=0,nr=0; ^ user.cpp:25:69: warning: unused variable ‘ok’ [-Wunused-variable] int ri=0,gi=0,bi=0,m,n,i,j,minim=INT_MAX,e,w,l1,c1,pi,ps,k,o,o1,ok=0,nr=0; ^ user.cpp:25:74: warning: unused variable ‘nr’ [-Wunused-variable] int ri=0,gi=0,bi=0,m,n,i,j,minim=INT_MAX,e,w,l1,c1,pi,ps,k,o,o1,ok=0,nr=0; ^ user.cpp:29:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d\n",&m,&n); ^ user.cpp:34:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c",&u); ^ user.cpp:38:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"\n"); ^