Borderou de evaluare (job #586350)

Compilare: main.cpp: In function 'int main()': main.cpp:78:14: warning: unused variable 'ch' [-Wunused-variable] 78 | char ch; | ^~ main.cpp: In function 'char readchar()': main.cpp:17:14: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 17 | fread(rbuf, 1, 128*1024, in); | ~~~~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int read()': main.cpp:30:19: warning: 'x' is used uninitialized in this function [-Wuninitialized] 30 | nr=nr*10+x; | ~~^~~~~~~~