Compilare: main.cpp: In function 'int main()': main.cpp:67:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=k; i<n; i++) ~^~ main.cpp:33:24: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(s,10000005,f);pp1=pp2=1; ^ main.cpp:35:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",s2); ^