View Compilation Error

0_0_17092620_20923.cpp:3:14: error: initializer-string for array of chars is too long [-fpermissive]
 char map[26]="abcdefghijklmnopqrstuvwxyz";
              ^
0_0_17092620_20923.cpp: In function 'int main()':
0_0_17092620_20923.cpp:46:21: error: 'rand' was not declared in this scope
             i= rand()%26;
                     ^