Typecasting

you can watch parallel the video for C/C++ (german): https://www.youtube.com/watch?v=5iL-onZ6M5U&list=PLEWVM-KBUSpmWSfyoFdD_hLWAY_9tTgi5&index=13

import ROOT

import fortranmagic
%load_ext fortranmagic
import os
import sys

import numpy as np

if sys.platform.startswith("win"):
        # Depends of system, python builds, and compilers compatibility.
        # See below.
    f_config = "--fcompiler=gnu95 --compiler=mingw32"
else:
        # For Unix, compilers are usually more compatible.
    f_config = ""

    # Disable only deprecated NumPy API warning without disable any APIs.
f_config += " --extra '-DNPY_NO_DEPRECATED_API=0'"

%fortran_config {f_config}

New default arguments for %fortran:
	 --extra '-DNPY_NO_DEPRECATED_API=0'

C++

%%cpp

cout <<int(7.8)<<endl;
cout <<7/8<<endl; //attention here
cout <<double(7/8)<<endl; //that also does not do the job
cout <<7./8<<endl; //thats ok
cout <<7/8.<<endl; //thats ok

7
0
0
0.875
0.875

C

%%cpp

printf("%d",(int)7.8);

7

Javascript

javascript does not distinguish between integers and floating point numbers. https://www.w3schools.com/js/js_type_conversion.asp

%%js //the next line is only necessary in jupyter notebooks
element.setAttribute('style', 'white-space: pre;');console.log=function(text){element.textContent+=text+"\n"}

console.log(7/8)
console.log(Number("1")+1)
console.log(String(1)+1)
console.log(Boolean(1))

Python

print(7/8)
print(int(7.8))
print(int("7"))
print(float("7.2")+1.1)
print(str(2)+str(1.1))
print(bool(1))
print(bool(0))

0.875
7
7
8.3
21.1
True
False

Fortran

%%fortran 

! program and subroutine exchanged due to jupyternotebook

! program main
subroutine main()
    implicit none
    integer :: stat
    integer :: i
    real*8 :: d
    character*20 :: s
    character*30 :: s2
    print *,7/8
    print *,int(7.8d0)
    i=7;d=7.2
    write(s,"(i5)") i
    print *,s
    write(s,"(f10.5)") d
    print *,s
    write(s,"(es20.5)") d
    print *,s
    i=2;d=2.1
    read(s,*,iostat=stat) i
    read(s2,*,iostat=stat) d
    print *,i,d
    !print *,logical(1)
    !print *,logical(0)
! end program
end subroutine main

main()

           0
           7
     7               
    7.20000          
          7.20000E+00
           2   2.0999999046325684