View Compilation Error

0_0_1734453_24608.cpp: In function `void add()':
0_0_1734453_24608.cpp:18: error: name lookup of `i' changed for new ISO `for' scoping
0_0_1734453_24608.cpp:9: error:   using obsolete binding at `i'
0_0_1734453_24608.cpp:26: error: `strrev' undeclared (first use this function)
0_0_1734453_24608.cpp:26: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1734453_24608.cpp: In function `int main()':
0_0_1734453_24608.cpp:42: error: `strrev' undeclared (first use this function)