Write - a program to define a 2 d array int rryl {1, 2, 3, 4, 9,10,11,121 {} {, June} respectively output of all the prime Numbers, and to all the prime Numbers and the average
To the output, (prime Numbers: in a natural number greater than 1, besides 1 and itself, there will be no other factor)

CodePudding user response:

 # include & lt; Bits/stdc++. H> 
using namespace std; 

Int rryl [3] [4]={{1, 2, 3, 4}, {5,6,7,8}, {9,10,11,12}}; 

Bool isprime (int a) {
For (int I=2; iIf I==0) (a % {
return false; 
} 
} 
return true; 
} 

Int main () {
Int CNT=0; 
Double sum=0; 
Double pj.//the mean 
for(int i=0; i<3; + + I) {
for(int j=0; j<4. + + j) {
If (isprime (rryl [I] [j])) {
The sum +=rryl [I] [j]; 
+ + CNT; 
Cout & lt; } 
} 
} 
Pj=sum/CNT; 
Cout & lt; Cout & lt; Cout & lt; return 0; 
}