Create and display a histogram using the values in a file 1

Solution

//Programme code begins

#include <stdio.h>
#define SIZE   100

int main()
{
       char filename[SIZE];               // holds filename
       //varible declarations
        FILE *fptr;                       //pointer declaration
        int c,counter;
        int a[10]={0},other=0,i,j,numberArray[100];  
        printf(\"Enter file name : \ \");
        scanf(\"%s\",filename);
   // file opeing error in case any problem
    if ((fptr = fopen(filename, \"r\")) == NULL)
    {
      
        printf(\"Error! opening file\");
        return 0;    
    }
    else
    printf(\"Success Reading file data : \ \");
  
  
    while(1)    //loop to find each digit counts
   {
       counter = fscanf(fptr, \"%d\", &c);       //read data in integer form
       if(counter==1)                           //if counter not equal to 1 then EOF occurs
       {
      
   //else if ladder for each digit occurences finding
        if (c == 0 )
       {
           a[0]=a[0]+1;
        }
        else if (c==1)
        {
           a[1]=a[1]+1;
          
       }
       else if (c==2)
        {
           a[2]=a[2]+1;
          
       }
       else if (c==3)
        {
           a[3]=a[3]+1;
          
       }
       else if (c==4)
        {
           a[4]=a[4]+1;
          
       }
       else if (c==5)
        {
           a[5]=a[5]+1;
          
       }
       else if (c==6)
        {
           a[6]=a[6]+1;
          
       }
       else if (c==7)
        {
           a[7]=a[7]+1;
          
       }
       else if (c==8)
        {
           a[8]=a[8]+1;
          
       }
       else if (c==9)
        {
           a[9]=a[9]+1;
          
       }
      
       else
       other=other++;
   }
   else
   {
       break;   //if EOF occures break the loop
   }
    
   }  
   //LOOP FOR DISPLAY OUTPUT IN HISTOGRAM FORM
   printf(\"Number\\t\\t Count     \ \");
   for(i=0; i <= 9; i++)
       {
              printf(\"%9d%15d       \", i, a[i]);
              // the inner for loop, for every row, read column by column and print the bar...
              for(j = 1; j<= a[i]; j++)
              // print the asterisk bar...repeat...
              printf(\"*\");
              // go to new line for new row...repeats...
              printf(\"\ \");
       }
        return   0;
}

Output :

Enter file name :
ashok.txt
Success Reading file data :
Number           Count
         0              0
        1              1       *
        2              1       *
        3              1       *
        4              1       *
        5              1       *
        6              1       *
        7              1       *
        8              1       *
        9              1       *