Borderou de evaluare (job #587591)

Compilare: main.cpp: In function 'int read()': main.cpp:25:23: warning: unused variable 'x' [-Wunused-variable] 25 | int nr=0, semn=1, x, ch; | ^ main.cpp: In function 'int main()': main.cpp:89:27: warning: unused variable 'x' [-Wunused-variable] 89 | long long int n,i,a,b,x; | ^ main.cpp:90:10: warning: unused variable 'ch' [-Wunused-variable] 90 | char ch; | ^~ main.cpp: In function 'char readchar()': main.cpp:19:14: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 19 | fread(rbuf, 1, 128*1024, in); | ~~~~~^~~~~~~~~~~~~~~~~~~~~~~