View Compilation Error

0_0_23735173_8574.cpp: In function 'int main()':
0_0_23735173_8574.cpp:83:40: error: expected primary-expression before '%' token
                 res=spowmul(a,m-1,n+2);%0
                                        ^
0_0_23735173_8574.cpp:83:41: error: expected '}' at end of input
                 res=spowmul(a,m-1,n+2);%0
                                         ^
0_0_23735173_8574.cpp:83:41: error: expected '}' at end of input