Compilare: main.cpp: In function 'char adv()': main.cpp:18:37: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buf,sizeof(char),SIZE,fin); ^ main.cpp: In function 'int findmex()': main.cpp:46:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:80:12: warning: 'jj' may be used uninitialized in this function [-Wmaybe-uninitialized] int ii,jj; ^~