View Compilation Error

242267_0_30674.cpp:2:18: strng.h: No such file or directory
242267_0_30674.cpp: In function `int main()':
242267_0_30674.cpp:10: error: cannot convert `int*' to `char*' for argument `1' to `char* gets(char*)'
242267_0_30674.cpp:11: error: `strlen' undeclared (first use this function)
242267_0_30674.cpp:11: error: (Each undeclared identifier is reported only once for each function it appears in.)