0_0_1978386_10901.cpp:3: error: `main' must return `int'
0_0_1978386_10901.cpp: In function `int main(...)':
0_0_1978386_10901.cpp:5: error: expected identifier before '&' token
0_0_1978386_10901.cpp:5: error: request for member of non-aggregate type before '&' token
0_0_1978386_10901.cpp:6: error: `fun' undeclared (first use this function)
0_0_1978386_10901.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1978386_10901.cpp: At global scope:
0_0_1978386_10901.cpp:9: error: ISO C++ forbids declaration of `fun' with no type
0_0_1978386_10901.cpp: In function `int fun(int, int, int)':
0_0_1978386_10901.cpp:9: error: `int fun(int, int, int)' used prior to declaration
0_0_1978386_10901.cpp:14: error: `z' undeclared (first use this function)
0_0_1978386_10901.cpp:15: error: expected `;' before '}' token
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