C_综合使用数组实现简单的学生成绩管理系统
源码：
/* 学生成绩查询系统 */
# include <stdio.h>
# include <stdlib.h>
int main( )
{
int select;
int i, j;
int score[5][7];
int average = 0;
int sum = 0;
do{
printf("本程序有4项功能：\n");
printf(" 1. 根据学号查询学生成绩\n");
printf(" 2. 根据考试号统计成绩\n") ;
printf(" 3. 根据考试号和学号查询成绩\n");
printf(" 4. 成绩录入\n");
printf(" 0. 退出\n");
printf(" 请输入选择(0 - 4): ");
scanf("%d", &select);
switch(select)
{
case 0:
printf("Good-Bye~\n");
exit(0);
break;
case 1:
printf("输入学号："); // 根据i值确定学号，然后按学号输出全部成绩
scanf("%d\n", &i);
for(j=1; j<7; j++)
{
printf("第%d科成绩是%d\n", j, score[i][j]);
sum += score[i][j]; // 实现累加
&nb
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源码:
# include <stdio.h>
int main()
{
/* 换行符'\n'，用于输出换行 */
printf("How are you?\n");
printf("I am fine.\n\n");
/* 横向跳格符'\t'，使跳到下一个输出区 */
......
源码:
# include <stdio.h>
int main()
{
int i, j, k;
int m, n, p;
i = 8;
j = 10;
k = 12;
/* 自增在操作数之前 */
......
源码:
# include <stdio.h>
int main()
{
int x, y;
printf("请输入自变量x：");
scanf("%d", &x);
if(x < 6)
{
......
源码:
# include <stdio.h>
int main()
{
/* sex代表输血者的性别，weight代表输血者的体重，cubage代表输血量 */
int sex, weight, cubage;
printf("请给出输血者的性别（女性为负数）和体重：(用逗号隔开)");
&nbs ......
源码:
# include <stdio.h>
int main()
{
int x, y, num1, num2, temp;
printf("请输入两个正整数：\n");
scanf("%d %d", &num1, &num2);
if(num1 < num2)
......
