View Compilation Error

0_0_31392349_6724.cpp: In function 'int main()':
0_0_31392349_6724.cpp:21:9: error: expected initializer before '==' token
    int l==i+1,r=n-1;
         ^
0_0_31392349_6724.cpp:22:9: error: 'r' was not declared in this scope
    if(s[r]-s[l]<=m)
         ^
0_0_31392349_6724.cpp:22:14: error: 'l' was not declared in this scope
    if(s[r]-s[l]<=m)
              ^