View Compilation Error

0_0_20846135_8254.cpp: In function 'int main()':
0_0_20846135_8254.cpp:14:44: error: lvalue required as left operand of assignment
                 if((int)(n*p/100)-(n*p/100)=1))
                                            ^
0_0_20846135_8254.cpp:14:47: error: expected primary-expression before ')' token
                 if((int)(n*p/100)-(n*p/100)=1))
                                               ^