View Compilation Error

0_0_31923837_31197.cpp: In function 'int main()':
0_0_31923837_31197.cpp:6:5: error: expected initializer before 'long'
     long long a[50];
     ^
0_0_31923837_31197.cpp:7:5: error: 'a' was not declared in this scope
     a[0]=3;
     ^
0_0_31923837_31197.cpp:10:9: error: 'i' was not declared in this scope
     for(i=3;i<50;i++)
         ^