Question

求如何将这个c语言的scanf、printf转换为c++的cin、cout的形式？

#include <stdio.h>
#include <stdlib.h>
#define N 100
char *get_max(char s[]);
int main( )
{
char s[N] = "";
scanf("%s",s);
char *p = get_max(s);
while(*p)
{
if(*p>='a'&&*p<='z')
*p -= 32;
p++;
}
printf("%s\n", s);
return 0;
}
/*
char *get_max(char s[])
{
char ch = s[0];
int i,maxi;
for(i=0; s[i]; ++i)
if(s[i]>ch){
ch = s[i];
maxi = i;
}
return &s[maxi];
}
*/
char *get_max(char s[])
{
char *max = s;
for(char *p = s; *p; p++)
if( *p>*max ) max = p;
​return max;
}

Answer 1

#include<iostream>

using namespace std;

#define N 100

char *get_max(char s[]);

int main( )

{ char s[N] = "";

  cin>>s;

  char *p = get_max(s);

  while(*p)

  { if(*p>='a'&&*p<='z')

      *p -= 32;

    p++;

  }

  cout<<s<<endl;

  return 0;

}

char *get_max(char s[])

{ char *max = s;

  for(char *p = s; *p; p++)

    if( *p>*max ) max = p;

  return max;

}

Answer 2

1
删除两个#include
2
添加
#include<iostream>
using namespace std;
3
scanf("%s",s);改成cin>>s;
printf("%s\n",s);改成cout<<s<<endl;

Answer 3

#include <iostream>
#include <cstring>
#include <stdlib.h>
#define N 100
using namespace std;

char s[N];

char *get_max(char s[]);

int main()
{
cin>>s;
char *p = get_max(s);
while(*p)
{
if(*p >= 'a' && *p <= 'z')
*p -= 32;
p++;
}
cout<<s<<endl;

return 0;
}

char *get_max(char s[])
{
char *max = s;
for(char *p = s; *p; p++)
if(*p > *max) max = p;
return max;
}