CodePudding user response:

 # include & lt; stdio.h> 
#include  
#include  

Int sushu (int); 
Int main () 
{
int i=0; 
Int nCount=0; 
Int ni=0, num; 
For (I=100; i <=999; I + +) {
Num=I; 
If (sushu (num) & amp; & Num % 100 & gt; 10 & amp; & Sushu (num % 100) & amp; & Sushu (10) num %) {
NCount++; 
Printf (" % d \ t ", num); 
} 
/* 
If (sushu (I)) 
{
Int a=I/10% 10; 
Int b=I % 10; 
Ni=a * 10 + b; 
If (sushu (ni) & amp; & a !=0 & amp; & B!=0) 
{
Int c=I % 10; 
If (sushu (c)) 
{
NCount + +; 
} 
} 
} 
*/
} 
Printf (" + + % d ", nCount); 
System (" pause "); 
return 0; 
} 

Int sushu (int n) 
{
int i=0; 
If (n & lt; 2) 
return 0; 
For (I=2; i <=SQRT (n); I++) 
{
If I (n %==0) 
return 0; 
} 
return 1; 
} 
/* 
Int sushu (int I) 
{
int n=0; 
For (n=2; N & lt;=SQRT (I); N + +) 
{
If (I % n==0) 
return 0; 
} 
return 1; 
} 
*/