求C语言高手来编程？
#include
#include
int main() //void 怎么还return(0);
{
int *pr;
int n,i,k;
printf("please input the size of the array : ");
scanf("%d",&n);
getchar();
pr=(int *)malloc(n*sizeof(int));
printf("please input the array : ");
for(i=0; i<n; i++)
{
scanf("%d",&pr[i]); //pr本身就是地址
}
k = *pr;
for(i=1;i<n;i++)
{
if (pr[i]>k)
k = pr[i];
}
free(pr); //用完了再free
printf("the largest number is %d
",k);
return(0);
}
test.txt,，，，，这里用双引号，你只用了一个
if(((fp=fopen("D:\\","r"))==NULL)) 这里是双反斜杠，要不然就是\"转义字符了
#include <stdio.h>
void main()
{
char temp;
int c = 0,n = 0;
while(true)
{
scanf("%c",&temp);
if (temp == '*') break;
if (temp <= '9' && temp >= '0') n++;
else if ( (temp <= 'z' && temp >= 'a') || (temp <= 'Z' && temp >= 'A') ) c++;
}
printf("Character: %d\nNumber: %d\n",c,n);
}
2.
#include <stdio.h>
void main()
{
char temp;
while(true)
{
scanf("%c",&temp);
if (temp == 0) break;
if (temp <= 'z' && temp >= 'a') temp += 'A'-'a';
else if (temp <= 'Z' && temp >= 'A') temp += 'a'-'A';
printf("%c",temp);
}
}
3.
#include <stdio.h>
void main()
{
int temp;
for(int i=1; i < 1000; i++)
{
if(i%3 != 0) continue;
else if(i%10 == 5|| (i/10)%10 == 5 || (i/100)%10 == 5) printf("%d\n",i);
}
}
lz牛逼
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