Compilare: user.cpp: In function ‘int main()’: user.cpp:32:43: warning: unused variable ‘k’ [-Wunused-variable] int i,j=1,m=2*n,maxl,maxc,l1,l2,c1,c2,k; ^ user.cpp: In function ‘int binsearch_l(int, int, int)’: user.cpp:16:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int binsearch_c(int, int, int)’: user.cpp:26:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:31:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&n,&nr); ^ user.cpp:33:79: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=n;++i)fscanf(in,"%d%d%d%d",&b[i*2-1],&a[i*2-1],&b[i*2],&a[i*2]); ^