hhid idind_m idind_c idind_s wave age_c
111104011 1.111e+11 1.111e+11 1.111e+11 2015 4
111104012 1.111e+11 1.111e+11 1.111e+11 2015 2
111104016 1.111e+11 1.111e+11 1.111e+11 2015 3
111104019 1.111e+11 1.111e+11 1.111e+11 2015 2
111104163 1.111e+11 1.111e+11 1.111e+11 2015 3
111202019 1.112e+11 1.112e+11 1.112e+11 2015 5
111204011 1.112e+11 1.112e+11 1.112e+11 2015 5
111204012 1.112e+11 1.112e+11 1.112e+11 2015 6
111204014 1.112e+11 1.112e+11 1.112e+11 2015 5
111204016 1.112e+11 1.112e+11 1.112e+11 2015 5
111204018 1.112e+11 1.112e+11 1.112e+11 2015 5
111302012 1.113e+11 1.113e+11 1.113e+11 2015 4
111302020 1.113e+11 1.113e+11 1.113e+11 2015 5
111401006 1.114e+11 1.114e+11 1.114e+11 2015 4
111401007 1.114e+11 1.114e+11 1.114e+11 2015 6
111402009 1.114e+11 1.114e+11 1.114e+11 2015 5
111402018 1.114e+11 1.114e+11 1.114e+11 2015 4
111402162 1.114e+11 1.114e+11 1.114e+11 2015 2
111404012 1.114e+11 1.114e+11 1.114e+11 2015 4
372102007 3.721e+11 3.721e+11 3.721e+11 2015 4
372102007 3.721e+11 3.721e+11 3.721e+11 2015 12
如最后两行,这个家庭有两个孩子,分别为4岁和12岁,我想新生成三个变量child_number,age_fir,age_sec,请问各位大牛,用什么命令?