Compilare: main.cpp: In function 'int main()': main.cpp:22:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(i-w.front()>=k+1) ^~ main.cpp:25:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if(a[w.front()]-a[d.front()]>mmax) mmax=a[w.front()]-a[d.front()]; ^~ main.cpp:12:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&n,&k); ^ main.cpp:13:39: 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(f,"%d",&a[i]); ^