c语言程序:某班有10名同学,建立学生结构体类型,包括学号,姓名,3门课程...答:include"string.h"include <stdlib.h> define N 100000 struct st{ char a[15];char b[20];int x,y,z;};int fun1(int *x,int *y){ int t;t=*x;x=*y;y=t;} int fun2(char *x,char *y){ char *t;strcpy(t,x);strcpy(x,y);strcpy(y,t);} int main() { /*___*...