be created by you and after creation you must save some radius in this input

# Be created by you and after creation you must save

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be created by you and after creation you must save some radius in this input file */ if(inp==NULL)  // to check input file is opened properly or not  { printf("Not able to open input file"); exit(1);  // terminates the program // end of if      /* Open the output file  */ outp = fopen("circle.out", "w");   /* Read the radius from circle.dat  data file file    */
fscanf(inp, "%lf", &radius); /* Stores (Saves ) following fprinf statement’s O/P in circle.out output file */ fprintf(outp, "The radius is %.2f\n", radius);   /* Calculate the area    */ area = PI * radius * radius;   /* Calculate the circumference   */ circum = 2 * PI * radius;   /* Following fprintf statements Stores the area and circumference in  output file circle.out   */ fprintf(outp, "The area is %.2f\n", area); fprintf(outp, "The circumference is %.2f\n", circum);   /* Close input and output files   */ fclose(inp); fclose(outp); return (0);  // returns 0 integer value to operating system // end of main Example #2 : /*Miles-to-Kilometers Conversion Program with Named Files */ /* Converts distances from miles to kilometers.   */ #include <stdio.h>     /* printf, scanf, fprint, fscanf, fopen, fclose  definitions */ #include<stdlib.h>  // it used here because of exit( ) function #define KMS_PER_MILE 1.609  /* conversion constant  */ int main(void)  {   double miles,  /* distance in miles */               kms;

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• Spring '10
• zaman
• Input/output, input file, input data file, outp
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