View Compilation Error

0_0_18799167_20924.cpp: In function 'int main()':
0_0_18799167_20924.cpp:9:5: error: expected initializer before 'scanf'
     scanf("%d",&t);
     ^
0_0_18799167_20924.cpp:26:17: error: 's' was not declared in this scope
                 s[i]='1';
                 ^
0_0_18799167_20924.cpp:28:17: error: 's' was not declared in this scope
                 s[i]='0';
                 ^
0_0_18799167_20924.cpp:30:23: error: 's' was not declared in this scope
         printf("%s\n",s);
                       ^