Compilare: main.cpp: In function 'int main()': main.cpp:48:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<strlen(s1); i++) ~^~~~~~~~~~~ main.cpp:54:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<t1.size()-1; i++) ~^~~~~~~~~~~~ main.cpp:66:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<t1.size()-1; i++) ~^~~~~~~~~~~~ main.cpp:72:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<t1.size()-1; i++) ~^~~~~~~~~~~~ main.cpp:84:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<strlen(s2); i++) ~^~~~~~~~~~~ main.cpp:89:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<t2.size()-1; i++) ~^~~~~~~~~~~~ main.cpp:99:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<t2.size()-1; i++) ~^~~~~~~~~~~~ main.cpp:106:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<t2.size()-1; i++) ~^~~~~~~~~~~~ main.cpp:117:27: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long long int' [-Wformat=] fprintf(g, "%d\n", sol); ^ main.cpp: In function 'char nextch()': main.cpp:20:39: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { fread(buf, BUF_SIZE, 1, f); ^