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C

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CodePudding user response:

 # include & lt; Stdio. H> 
Int isprime (int n) 
{
int i; 
If (n & lt; 2) 
return 0; 
For (I=2; I & lt; n; I++) 
{
If (n % 2==0) 
{
return 0; 
} 
} 
return 1; 
} 

Int resolve (int n) 
{
int i; 
For (I=2; I & lt; n; I++) 
{
If (isprime (I) & amp; & Isprime (n - I)) 
{
return i; 
} 
} 
return 0; 
} 

Int main (void) 
{
Int n, m; 
int res; 
The scanf (" % d % d ", & amp; N, & amp; M); 
For (int I=n; I & lt;=m; I++) 
{
Res=resolve (I); 
If (res!=0) 
{
Printf (" % d=% d + % d \ n ", I, res, I - res); 
} 
} 
return 0; 
}

CodePudding user response:

The second question

 # include & lt; Stdio. H> 
Int judge (int a [], int n, int * CD) 
{
If (n & lt; 3) 
return -1; 
Int I, j, TMP. 
For (I=0; I & lt; n; I++) 
{
For (j=I + 1; J & lt; n; J++) 
{
If (a [I] & gt; A [j]) 
{
TMP=a, [I]. 
A [I]=a, [j]. 
A [j]=TMP; 
} 
} 
} 
* CD=a, [1], a [0]. 
For (I=0; I & lt; N - 1; I++) 
{
If (* CD!=(a [I + 1] - [I] a)) 
{
* CD=0; 
return 1; 
} 
} 
return 0; 
} 

Int main (void) 
{
Int a [50]={0}; 
Int n, CD; 
The scanf (" % d ", & amp; N); 
for (int i=0; I & lt; n; I++) 
{
The scanf (" % d ", & amp; A [I]); 
} 
If (judge (a, n, & amp; CD)==0) 
{
Printf (" % d ", CD); 
} 
return 0; 
}

CodePudding user response:

The third topic

 # include & lt; Stdio. H> 

Num int CheckPhoneNum (char *) 
{
Char * p=num. 
Int len=0; 
While (* (p++)!='\ 0') 
{
Len++; 
} 
For (int I=len - 1; I & gt; Len - 5; I -) 
{
If (num [I] & gt;='0' & amp; & Num [I] <='9') 
{
continue; 
} 
The else 
{
return 1; 
} 
} 
If (num [len - 5]!='-') 
{
Printf (" num [% d] is not - \ n ", len - 5). 
return 1; 
} 
For (int I=len - 6; I & gt; Len - 9; I -) 
{
If (num [I] & gt;='0' & amp; & Num [I] <='9') 
{
continue; 
} 
The else 
{
Printf (" prefix num] [% d % d is not number \ n ", I, num [I]); 
return 1; 
} 
} 
If (num [len - 8]=='0') 
{
Printf (" num [% d] is not - \ n ", len - 5). 
return 1; 
} 
int sum=0; 
for (int i=0; I & lt; Len - 9; I++) 
{
The sum + num=[I] - '0'; 
} 
If (sum==0) 
{
If (num [len - 9]=='-') 
{
Printf (" num [% d] is - \ n ", len - 9); 
return 1; 
} 
} 
The else 
{
If (num [len - 9]!='-') 
{
Printf (" num [% d] is not - \ n ", len - 5). 
return 1; 
} 
} 
return 0; 
} 

Int main (void) 
{
Char num [15]. 
The scanf (" % s ", num); 
If (CheckPhoneNum (num)==0) 
{
Printf (" % s \ n "provisions, num); 
} 
The else 
{
Printf (" % s is not in conformity with the provisions \ n ", num); 
} 

return 0; 
}

CodePudding user response:

Thank you, thank you