我有一个家庭作业，要求我为我建造的一个相信气象站获得25个随机整数（rand（））。我不知道我到目前为止所做的事情是否正确，我也不知道从哪里开始。
我不想要答案，我想了解如何将代码放在一起。我在谷歌和我的教科书中搜索过，但对我来说没有意义。我甚至不确定我是否可以在这里发布这类问题，但我想我至少会尝试。
#include <stdio.h>
#include <stdlib.h>
int main ()
{
int get_value()
{
int ran_num=rand()%40+60;
return ran_num;
}
int temp_value[25];
int ran_num=0;
for (ran_num=0; ran_num<sizeof(temp_value); ran_num++)
{
temp_value[0] = ran_num;
}
return 0;
}
答案 0 :(得分：0)
使用printf进行一些基本格式化，即
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main(void) {
int i = 0;
printf("c1 c2 c3 c4 c5 c6 c7 c8 c9 c0\n");
for(i = 0; i < 10; i++) {
printf("%0.2d %0.2d %0.2d %0.2d %0.2d %0.2d %0.2d %0.2d %0.2d %0.2d\n",
i,
i + 1,
i + 2,
i + 3,
i + 4,
i + 5,
i + 6,
i + 7,
i + 8,
i + 9
);
}
}
打印
c1 c2 c3 c4 c5 c6 c7 c8 c9 c0
00 01 02 03 04 05 06 07 08 09
01 02 03 04 05 06 07 08 09 10
02 03 04 05 06 07 08 09 10 11
03 04 05 06 07 08 09 10 11 12
04 05 06 07 08 09 10 11 12 13
05 06 07 08 09 10 11 12 13 14
06 07 08 09 10 11 12 13 14 15
07 08 09 10 11 12 13 14 15 16
08 09 10 11 12 13 14 15 16 17
09 10 11 12 13 14 15 16 17 18
答案 1 :(得分：0)
#include <stdio.h>
#include <stdlib.h>
int main ()
{
int temp_value[25];
for (int i=0; i<sizeof(temp_value); i++){
temp_value[i] = rand()%40+60;
printf("%d \r\n", temp_value[i]);
}
return 0;
}
答案 2 :(得分：0)
#include <stdio.h>
#include <stdlib.h>
int get_value()
{
int ran_num=rand()%40+60;
return ran_num;
}
int main ()
{
int temp_value[25];
int ran_num=0;
for (ran_num=0; ran_num<sizeof(temp_value); ran_num++) {
temp_value[0] = ran_num;
}
return 0;
}
答案 3 :(得分：0)
这是七个步骤中的修复过程。希望这会给你一些见解。这正是我为自己的代码所做的事情。
// original
#include <stdio.h>
#include <stdlib.h>
int
main()
{
// BUG: this is a "nested" function, which does _not_ exist in C
int get_value() {
int ran_num = rand() % 40 + 60;
return ran_num;
}
int temp_value[25];
int ran_num = 0;
for (ran_num = 0; ran_num < sizeof(temp_value); ran_num++) {
temp_value[0] = ran_num;
}
return 0;
}
// moved function to proper level
#include <stdio.h>
#include <stdlib.h>
int get_value() {
int ran_num = rand() % 40 + 60;
return ran_num;
}
int
main()
{
int temp_value[25];
int ran_num = 0;
// BUG: this _only_ sets all temp_value[0] = 0
for (ran_num = 0; ran_num < sizeof(temp_value); ran_num++) {
temp_value[0] = ran_num;
}
return 0;
}
// changed get_value variable name to make things more clear
#include <stdio.h>
#include <stdlib.h>
int get_value() {
int val = rand() % 40 + 60;
return val;
}
int
main()
{
int temp_value[25];
int ran_num = 0;
// BUG: this _only_ sets all temp_value[0] = 0
for (ran_num = 0; ran_num < sizeof(temp_value); ran_num++) {
temp_value[0] = ran_num;
}
return 0;
}
// changed loop to call get_value
#include <stdio.h>
#include <stdlib.h>
// changed variable name
int get_value() {
int val = rand() % 40 + 60;
return val;
}
int
main()
{
int temp_value[25];
int ran_num = 0;
// BUG: this _only_ sets all temp_value[0] to a random value
for (ran_num = 0; ran_num < sizeof(temp_value); ran_num++) {
temp_value[0] = get_value();
}
return 0;
}
// changed loop to set all values in array
#include <stdio.h>
#include <stdlib.h>
// changed variable name
int get_value() {
int val = rand() % 40 + 60;
return val;
}
int
main()
{
int temp_value[25];
int ran_num = 0;
// this sets all values, but there is still a bug ...
// it will overflow temp_value
for (ran_num = 0; ran_num < sizeof(temp_value); ran_num++) {
temp_value[ran_num] = get_value();
}
return 0;
}
// changed loop to set all values in array but _not_ overflow
#include <stdio.h>
#include <stdlib.h>
// changed variable name
int get_value() {
int val = rand() % 40 + 60;
return val;
}
int
main()
{
int temp_value[25];
int ran_num = 0;
// now corrected, this sets all values to a random value
for (ran_num = 0; ran_num < sizeof(temp_value) / sizeof(temp_value[0]);
ran_num++) {
temp_value[ran_num] = get_value();
}
return 0;
}
// final cleanup
#include <stdio.h>
#include <stdlib.h>
// changed variable name
int get_value() {
int val = rand() % 40 + 60;
return val;
}
int
main()
{
int temp_value[25];
int temp_index;
// now corrected, this sets all values to a random value
for (temp_index = 0;
temp_index < sizeof(temp_value) / sizeof(temp_value[0]);
temp_index++) {
temp_value[temp_index] = get_value();
}
return 0;
}