Linking libraries

• Example library: libtriangle
  
• Code of libtriangle.c:
  

    void triangle (int n) {
   
     int rows = 1 << n;
   
     int i, j;
   
     for (i = 0; i < rows; i ++) {
        for (j = 0; j < i; j ++) {
    	printf (" ");
        }
        for (j = 0; j < rows; j ++) {
          if (i & j) 
    	printf ("  ");
          else
    	printf ("**");
        }
        printf ("\n");
      }
    }
    

  
  
• Code of triangle.h

    #include <stdio.h>
   
   void triangle (int n);
    

  
  
• Compiling static libraries
  
  • % gcc -c libtriangle.c -o libtriangle.o
    
  • % ar rc libtriangle.a libtriangle.o
    
  • % ranlib libtriangle.a
    
    
    

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