I believe the answer is B. Biographies and histories. (Otherwise its D)
Answer:
<em>C++</em>
////////////////////////////////////////////////////////////////////////////////////////////////////////
#include <iostream>
#include <vector>
using namespace std;
int main() {
vector<int> v;
int n = 1;
while (n != 0) {
cout<<"Enter an integer, the input ends if it is 0: ";
cin>>n;
v.push_back(n);
}
cout<<endl;
///////////////////////////////////////////////////////////
int sum = 0;
int num_positives = 0, num_negatives = 0;
for (int i=0; i<v.size()-1; i++) {
if (v[i] > 0)
++num_positives;
else
++num_negatives;
sum = sum + v[i];
}
//////////////////////////////////////////////////////////
cout<<"The number of positives is "<<num_positives<<endl;
cout<<"The number of negatives is "<<num_negatives<<endl;
cout<<"The total is "<<sum<<endl;
cout<<"The average is "<<(float)sum/(v.size()-1);
///////////////////////////////////////////////////////////
return 0;
}
Answer:
user_string = input("Input a string : ")
output = user_string.isnumeric()
if output == True:
print("yes")
else:
print("no")
Explanation:
- First of all check whether user input have all numeric value or not
.
- Display yes if string contain all numeric values
.
- Display no if string contain at least one non - integer character
.
Answer:
First Generation, Second Generation, Third Generation, Fourth Generation, Fifth Generation
Explanation:
First Generation- Vacuum Tubes
Second Generation- Transistors
Third Generation- Integrated Circuits
Fourth Generation- Microprocessors
Fifth Generation- Artificial Intelligence
Answer:
Relational query language is the language that is used in the queries of the relational databases that has rows and columns in table. The user or client presents a request for gaining the information from the database. The relationships in the database are defined in numerous ways which creates the query.
This language can be procedural form or non-procedural form.The operations performed by this language are communication with the relational database, analyzing the relationships between the entities of database,splitting the request from client and then execution of that request is done by database management system(DBMS), etc.
