Compilare: main.cpp: In function 'int caut(int, int)': main.cpp:38:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<poz[r].size();i++){ ~^~~~~~~~~~~~~~ main.cpp:42:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:49:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ main.cpp:51:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[i]); ^