Compilare: user.cpp: In function ‘int main()’: user.cpp:11:23: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[2000001]’ [-Wformat=] fscanf(fin,"%s",&sir1); ^ user.cpp:12:23: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[2000001]’ [-Wformat=] fscanf(fin,"%s",&sir2); ^ user.cpp:16:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<strlen(sir1);i++) ^ user.cpp:26:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<strlen(sir1);i++) ^ user.cpp:46:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<strlen(sir2)-strlen(sir1)+1;i++) ^ user.cpp:11:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%s",&sir1); ^ user.cpp:12:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%s",&sir2); ^