azeval.cpp: In function `long long int change4()': azeval.cpp:98: warning: `long long int val' might be used uninitialized in this function azeval.cpp: In function `int main()': azeval.cpp:119: warning: int format, different type arg (arg 2) /tmp/ccM5Q7mL.o(.text+0x3b8): In function `main': : the `gets' function is dangerous and should not be used.