Compilare: user.cpp: In function ‘int main()’: user.cpp:27:27: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[50]’ [-Wformat=] fscanf(f,"%s\n",&s); ^ user.cpp:43:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<strlen(p);j++) ^ user.cpp:73:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<strlen(p);j++) ^ user.cpp:18:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&k); ^ user.cpp:21:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&x); ^ user.cpp:24:19: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"\n"); ^ user.cpp:27:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s\n",&s); ^