function p= scriptc()% echo onSNRindB1=0:1:15; SNRindB2=0:0.1:15;  for i=1:length(SNRindB1)    smld_err_prb(i)=CPSK(SNRindB1(i));  end%     echo off;% % echo on;for j=1:length(SNRindB2)    SNR=exp(SNRindB2(j)*log(10)/10);    theo_err_prb(j)=Qfunct(sqrt(2*SNR));%此處SNR=E/N0end%     echo off;% % echo on;subplot(1,3,1);semilogy(SNRindB1,smld_err_prb,'*');subplot(1,3,2);semilogy(SNRindB2,theo_err_prb);subplot(1,3,3);semilogy(SNRindB1,smld_err_prb,'*',SNRindB2,theo_err_prb);