第一个是跟老师提供的答案完全一样的#includestdio.hmain(){floatx,i1,i2,j1,j2,n,r1,r2;x=0;i1=2.0;i2=3.0;j1=1.0;j2=2.0;r1=0.;r2=0.;for(n=1;n=20;n){x=i1/j1x;r1=i1;i1=i2;i2=r1i1;r2=j1;j1=j2;j2=r2j1;}printf(\"%f\",x);}第二个答案相差0.000003#includestdio.hmain(){floatx,i1,i2,j1,j2,n;x=0;i1=2.0;i2=3.0;j1=1.0;j2=2.0;for(n=1;n=10;n){x=i1/j1i2/j2x;i1=i1i2;i2=i2i1;j1=j2j1;j2=j2j1;}printf(\"%f\",x);}
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