for (int i = 0; i<100; i++){

//Do thing

}

​

#include <iostream>

using namespace std;

​

int main()

{

    for (int i = 0; i < 20; i++)

    {

        cout << i << endl;

    }

    //prints the number (i)

}

for(int i=0; i<=limit; i++)

{

    //statement

}

// infinite for loop

for(int i = 1; i > 0; i++) {

    // block of code

}

for (int i; i < 10; i++)

{

  cout << i << "\n";

}

​

​

for (int i = 0; i < 10; i++){

  //Do something as long as i is less than 10, 

  //In that case it will loop 10 times

  //use break; to restart the loop whenever you want to cancel the loops.

  cout << i;

  //at the end, remember i will be increased by 1.

}

​

//output 0123456789

#include <iostream>

using namespace std;

int main()

{

  for (int i=0;i<5;i++)

  cout << i <<endl;

}

#include <iostream>

using namespace std;

int main()

{

    int a = 1; 

    for (int i = 0; i<100; i++){

    //Do thing

      a++;

    }

    return 0;

}

int i,j;

​

for(i=1;i<5;i++)  //outer loop 

{

cout<<"Loop iteration:"<<i<<endl;  // outer loop 

for(j=1;j<5;j++) //inner loop 

{cout<<"Inner loop iteration:"<<j<<endl;}  //inner loop 

}   

​

​

return 0;

}

​

//for loop

for(int i=0;i<10;i++)

{

    //some work

}

​

//while loop

while(i<10){

    //do this

}

// C program to illustrate need of loops

#include <stdio.h>

int main()

{

    printf( "Hello World\n");

    printf( "Hello World\n");

    printf( "Hello World\n");

    printf( "Hello World\n");

    printf( "Hello World\n");

    printf( "Hello World\n");

    printf( "Hello World\n");

    printf( "Hello World\n");

    printf( "Hello World\n");

    printf( "Hello World\n");

    return 0;

}