View Compilation Error

0_0_29470473_5267.cpp: In function 'int main()':
0_0_29470473_5267.cpp:21:35: error: expected primary-expression before ')' token
 for ( int i = 0 ; i < len ; i + + ) 
                                   ^
0_0_29470473_5267.cpp:22:34: error: expected primary-expression before ')' token
 for ( int j = 0 ; j < 10 ; j + + ) 
                                  ^
0_0_29470473_5267.cpp:23:34: error: expected primary-expression before ')' token
 for ( int k = 0 ; k < 10 ; k + + ) 
                                  ^
0_0_29470473_5267.cpp:28:34: error: expected primary-expression before ')' token
 for ( int a = 0 ; a <= t ; a + + ) 
                                  ^
0_0_29470473_5267.cpp:29:34: error: expected primary-expression before ')' token
 for ( int b = 0 ; b <= a ; b + + ) 
                                  ^
0_0_29470473_5267.cpp:32:34: error: expected primary-expression before ')' token
 for ( int a = 0 ; a <= t ; a + + ) 
                                  ^
0_0_29470473_5267.cpp:33:34: error: expected primary-expression before ')' token
 for ( int b = 0 ; b <= a ; b + + ) 
                                  ^