Compilare: user.cpp: In function ‘void citire()’: user.cpp:25:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<strlen(s)-1;i++) ^ user.cpp:24:9: warning: unused variable ‘l’ [-Wunused-variable] int l=strlen(s)-1; ^ user.cpp:18:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d\n",&n,&k); ^ user.cpp:20:23: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(s,3500000,f); ^