Compilare: user.cpp: In function ‘int main()’: user.cpp:35:18: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[10000010]’ [-Wformat=] scanf("%s",&t); ^ user.cpp:39:24: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[22]’ [-Wformat=] while(scanf("%s",&w)!=EOF){ ^ user.cpp:31:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("abc2.in","r",stdin); ^ user.cpp:32:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("abc2.out","w",stdout); ^ user.cpp:35:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",&t); ^ user.cpp:33:9: warning: ‘l’ may be used uninitialized in this function [-Wmaybe-uninitialized] int l,len,i; ^