c语言讲座题.doc

讲座题目1、 基本语句用法讲解。数据类型int，float，double,数组等；输出语句printf,输入语句scanf;if、else.2、 两个数相加求和。#includevoid main()int a,b,sum;printf(“请输入要求和的两个数a和bn”);scanf(“%d%d”,&a,&b);sum = a + b;printf(“sum=%dn”,sum);3、 比较两个数的大小并交换其值。#includevoid main()int a,b,temp;a = 3;b = 4;printf(“原值为：a=%d,b=%dn”,a,b);temp = a;a = b;b = temp;printf(a和b交换值后为 ：a=%d,b=%dn,a,b);4、 1+2+.+100求和。#includevoid main()int i,sum=0;for(i=1;i=100;i+)sum = sum + i;printf(“sum = %dn”,sum);5、 3位数反转问题。#includevoid main()int begin,result;int g,s,b;printf(“请输入一个三位数n”);scanf(“%d”,&begin);printf(“此三位数原值是：%d”,begin);g = begin % 10;s = (begin%100)/10;b = begin/100;result = g*100+s*10+b;printf(“逆序后的三位数为:%dn”,result);6、 函数、指针讲解。6.1、函数（同样以以上的求两数和讲解）#includeint add(int x, int y)int sum;sum = x + y;return sum;void main()int a,b,sum;printf(“请输入欲求和的两个数a和bn”);scanf(“%d%d”,&a,&b); sum = add(a,b);printf(“sum=%dn”,sum);6.2、指针简单讲解，传地址问题比较两数大小(变换两数的值)。#includevoid swap(int *x,int *y)int temp;temp = *x;*x = *y;*y =temp;void main()int a,b;int *point1,*point2;printf(“请输入a和b的值n”);scanf(“%d%d”,&a,&b);point1 = &a;point2 = &b;printf(“两者原值为:a=%d,b=%dn”,a,b);swap(point1,point2);printf(“两者变换后值为:a=%d,b=%dn”,a,b);7、 冒泡排序算法讲解(将一下十个数按从小到大排序输出)。#includevoid maoPao(int x10)int i,j,t;for(i=0;i9;i+)for(j=0;jxj+1)t = xj;xj = xj+1;xj+1 = t;void main()int a10=5,7,1,4,6,3,0,7,9,1;int i;for(i=0;i10;i+)printf(