C程序执行cmd并获取返回值 #include <stdio.h>#include<stdlib.h>#include<string.h>intmain(intargc,char*argv[]) {if(argc ==1) { fprintf(stderr,"Error - One parameter is missing\n"); }elseif(argc>2) { fprintf(stderr,"Error - Too many parameters\n"); }elseif(argc ==2) { printf...