Compilare: main.cpp: In function 'int main()': main.cpp:73:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0; i + 1 < linii.size(); i++ ) { ~~~~~~^~~~~~~~~~~~~~ main.cpp:75:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i+1 < linii.size() && linii[i+1]==linii[i]){ ~~~~^~~~~~~~~~~~~~ main.cpp: In function 'char getch()': main.cpp:17:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread( buffer, 1, buffSize, fin ); ^