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Hi all
My name is Vahid Majidi.
I am learning C++, and I will be glad if I can answer questions of those newcommers to C++, to help others learn more and learn from others.
ThanksHello my community,
I am new to this forum & want to solve a project question.Ave tried my best but it is not executing, shows 8 errors. I am trying to find the prime numbers between 1 -7000.The sub intervals that holds themost prime numbers and printing a histogram.
12345678910111213141516171819202122232425#include<stdio.h>#include<conio.h>void main(){int num = 0;prime_num(num);}{for(int i=0;i<=7000;i++){for(int j=2; j <= 7000;j++){if( i != j && 1 != j){return 0;break;}if(num%1 == num){if (isprime){printf("Prime:", i);}return 1;}Hi Mr. Vahid Majidi,
I am Lalit Sharma and I have a query.
Please help me to write a program in C++, How to count all the three digit number tht lie between 100 to 300 and whose 1st & last digit is 2.
If possible then please reply me at [email protected].
Hope to hear from youHow to count all the three digit number tht lie between 100 to 300 and whose 1st & last digit is 2?
Ans:123456789101112131415161718192021222324252627282930313233#include <iostream>using namespace std;void display(){int count = 0;for(int i = 100;i<300;i++){int value = i;if(((value%10)== 2) &&(value/100)==2){cout<<value<<endl;count++;}}cout<<"Total Number "<<count<<endl;}void main(){display();}output:202212222232242252262272282292Total Number 10Thats awsome I was thinking about this one.
This is the way I was going-
12345678910111213141516171819202122#include <iostream>#include <algorithm>#include <vector>bool IsThis (int x) { return (x=1); }bool IsAnswer (int i) { return (((i%10)==2)&(i/100)==2); }int main () {int mynumbers;int mycount;std::vector<int> myscope;for (int x =100; x<300; x++) myscope.push_back(x);std::vector<int> myvector;for (int i=100; i<300; i++) myvector.push_back(i);mynumbers = (int) count_if (myscope.begin(), myscope.end(), IsThis);std::cout << "myvector contains " << mynumbers << " numbers between 100 and 300.n";mycount = (int) count_if (myvector.begin(), myvector.end(), IsAnswer);std::cout << "myvector contains " << mycount << " numbers that begin and end with 2.n";return 0;}
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