Compilare: user.cpp: In function ‘int main()’: user.cpp:43:21: warning: unused variable ‘k’ [-Wunused-variable] int l,c,x,i,j,n,k,t,flag,f; ^ user.cpp:43:25: warning: variable ‘flag’ set but not used [-Wunused-but-set-variable] int l,c,x,i,j,n,k,t,flag,f; ^ user.cpp:46:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d%d" ,&t,&n,&v); ^ user.cpp:76:27: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(l!=1||c!=1){ ^ user.cpp:76:21: warning: ‘l’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(l!=1||c!=1){ ^