PHYS 252

• website = http://faculty.wcas.northwestern.edu/yoram/phys252/phys252.html
• 1 hour of lectures, followed by lab.

• Use C programming language
• Program #1:

  #include   <stdio.h>   
  main()                  
  {                               
          printf("Hi mom\n");  
  }
  

• include is header
• main is main program
• printf outputs to standard output
• \n is newline
• semicolon!!
• now enter code yourself (Getting Started with Visual C++)

• Program #2, illustrating variables:

  #include   <stdio.h>   
  main()                  
  {           
      double x;
      double y;
      int z;
      x = 3.;
      y = x ;
      x = x*x ;
      printf("answer is %lf %lf\n",x,y);
      z = 4;
      printf("int is %d\n",z);
  }
  

• Program #3, illustrating while, and output x*x

  #include   <stdio.h>   
  main()                  
  {                               
  	double x  ;     
  	x = -10. ;
  	while (x<10.) {      	
  	    printf("%lf %lf\n",x,x*x); 
  	    x = x + .1;      	  	  
  	}
  }
  

• Getting Started with Gnuplot