View Compilation Error

0_0_8356766_5191.cpp:5: error: expected unqualified-id before "char"
0_0_8356766_5191.cpp:5: error: expected `,' or `;' before "char"
0_0_8356766_5191.cpp: In function `void fun()':
0_0_8356766_5191.cpp:23: error: `c2' undeclared (first use this function)
0_0_8356766_5191.cpp:23: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8356766_5191.cpp: In function `int main()':
0_0_8356766_5191.cpp:55: error: `c2' undeclared (first use this function)