siruri de caractere exercitii manual clasa a 10 a

1.#include <bits/stdc++.h>
using namespace std;
int main()
{
  char a,s[256],p[256];
  int i,j,r1=0,r2=0,ok,r3=0;
  cin>>a;
  cin>>p;
  cin.getline(s,255);
  for(i=0;i<strlen(s);i++)
    {if(s[i]==p[0])
    {ok=1;
        for(j=0;j<strlen(p);j++)
        if(s[i+j]!=p[j])
        ok=0;
    if(ok==1)
        r3++;}
        if(strchr("aeiouAEIOU",s[i])!=0)
    r2++;
    if(s[i]==a)
        r1++;}
    cout<<r1<<" "<<r2<<" "<<r3;
    return 0;
}


2.#include <bits/stdc++.h>
using namespace std;
int main()
{
  char s[256],a;
  int i,j;
  cin>>s;
  a=s[0];
  for(i=0;i<strlen(s);i++)
    if(s[i]==a)
    strcpy(s+i,s+i+1);
  cout<<s;

    return 0;
}

3.#include <bits/stdc++.h>
using namespace std;
int main()
{
 char s[256],a;
 int i,c;
 cin>>s;
 c=strlen(s)+1/2+(strlen(s)+1)%2;
 for(i=0;i<c;i++)
    {strcpy(s,s+1);
    strcpy(s+strlen(s)-1,s+strlen(s));
    cout<<s<<"\n";}
    return 0;
}

5.#include <bits/stdc++.h>
using namespace std;
int main()
{
 char s[256];
 int i;
 cin>>s;
 for(i=0;i<strlen(s);i++)
    if(s[i]>='a' && s[i]<='z')
    s[i]=s[i]-'a'+'A';
    else
    s[i]=s[i]-'A'+'a';
cout<<s;
   return 0;
}

6.#include <bits/stdc++.h>
using namespace std;
int main()
{
 char s[256][256];
 int n,i,max1=0,max2=0,c1,c2;
 cin>>n;
 for(i=1;i<=n;i++)
    {cin>>s[i];
    if(strlen(s[i])>max1)
        {max2=max1;
        c2=c1;
        max1=strlen(s[i]);
        c1=i;}
    else
        if(strlen(s[i])>max2)
    {max2=strlen(s[i]);
     c2=i;}}
cout<<s[c1]<<s[c2];
   return 0;
}

7.#include <bits/stdc++.h>
using namespace std;
int main()
{
  char s[256][256],p1[256],p2[256],aux[256];
  int i,j,n,ok;
  cin>>n;
for(i=1;i<=n;i++)
    cin>>s[i];
strcpy(p1,s[1]);
strcpy(p2,s[2]);
if(strcmp(p1,p2)>0)
    swap(p1,p2);
for(i=3;i<=n;i++)
    if(strcmp(p1,s[i])>=0)
    {strcpy(p2,p1);
    strcpy(p1,s[i]);}
    else
    if(strcmp(p2,s[i])>=0)
     strcpy(p2,s[i]);

cout<<p1<<p2;
    return 0;
}

8.