a^bmodn模乘运算

RSA算法中求模乘运算的结果voidmodularexponentitationintxintrintpintt{intabc;ax;br;ct;ifb0如果b为零则结果等于1{printf"%d"c;输出结果return;}ifb>0&&b%20b为偶数{bb2;aaa%p;}