0_0_10341200_8583.cpp: In function `void fun()':
0_0_10341200_8583.cpp:47: error: `strrev' undeclared (first use this function)
0_0_10341200_8583.cpp:47: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_10341200_8583.cpp: At global scope:
0_0_10341200_8583.cpp:69: error: `main' must return `int'
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