View Compilation Error

0_0_37137777_18648.cpp: In function 'int main()':
0_0_37137777_18648.cpp:29:13: error: expected ',' or ';' before 'for'
             for (int k = 2; k <= i - 1; k++) {
             ^
0_0_37137777_18648.cpp:29:29: error: 'k' was not declared in this scope
             for (int k = 2; k <= i - 1; k++) {
                             ^