C:
#include<math.h>
#include<stdio.h>
main()
{
/* prints a logarithmic vertical axis (abcissa) */
int step[]={7,4,3,3,3,2,2,2,1,1};
int label[]={800,1000,1300,1400,1500,1600,1700,1800,1900,2000};
int i, j;
for (j = 0; j < 10; ++j)
{
printf("\n%4d +",label[j]);
for (i = 0;i < step[j]; ++i)
printf("\n | ");
}
}
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