Compilare: main.cpp: In function 'int main()': main.cpp:20:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2;i<=strlen(A+1);++i) ~^~~~~~~~~~~~~ main.cpp:29:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=strlen(B+1);++i) ~^~~~~~~~~~~~~ main.cpp:34:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k==strlen(A+1)) ~^~~~~~~~~~~~~ main.cpp:17:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",A+1); ^ main.cpp:18:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",B+1); ^