Test questions, the great god answers,

CodePudding user response:

Suggest to first try to write yourself ~

CodePudding user response:

Fyi:

 # include & lt; Stdio. H> 

Int func (int n) 
{
Int I, r, a, b, c; 

R=0; 
A=n/100; 
B=n % 100/10; 
C=n % 10; 

If (a==b | | b==c | | c==a) 
{
For (I=10; I & lt;=n/2; I++) 
{
If (I * I==n) 
{
R=1; 
break; 
} 
} 
} 

Return r; 
} 

Int main (void) 
{
Int n, I; 

The scanf (" % d ", & amp; N); 

If (n & lt; 101 | | n & gt; 999) 
{
Printf (" output wrong \ n "); 
return 1; 
} 

For (I=101; I & lt;=n; I++) 
{
If (func (I)==1) printf (" % d \ t ", I); 
} 

return 0; 
} 

CodePudding user response:

Two methods for reference:

 # include & lt; Stdio. H> 
#include  

Bool isPerSqr (int num);//method 1 
Bool isSqr (int n);//method 2 

Int main (int arg c, char * argv []) 
{
int n; 
The scanf (" % d ", & amp; N); 
If (n & lt; 101 | | n & gt; 999) return 1; 

For (int I=101; i<=n; I++) {
If (isPerSqr (I)) 
Printf (" [F1] % 4 d ", I); 
If (isSqr (I)) 
Printf (" % [F2] - 4 d \ n ", I); 
} 
system("pause"); 
return 0; 
} 

//method one: do not use the SQRT 
Bool isPerSqr (int num) 
{
Int n=num; 
for(int i=1; N> 0; I +=2) {
N -=I; 
} 
If (n==0) {
Int a=num % 10; 
Int b=num/10% 10; 
Int num=c/100; 
If (a==b | | a==c | |==b, c) return 1; 
} 
return 0; 
} 

//method 2: use SQRT, 
Bool isSqr (int n) 
{
Int d=(int) (SQRT (n) + 0.5);//round for the 
{if (n==d * d) 
Int a=n % 10; 
Int b=n/10% 10; 
Int c=n/100; 
If (a==b | | a==c | |==b, c) return 1; 
} 
return 0; 
}