Check the command line parameter: if less than required exit : Command Line Parameters « Development « C / ANSI-C

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Check the command line parameter: if less than required exit

  
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[])
{
  double pounds;

  if( argc != 2 ) {
    printf("Usage: CONVERT <ounces>\n");
    printf("Try Again");
    exit(1); /* stop the program */
  }

  pounds = atof(argv[1]) / 16.0;
  printf("%f pounds", pounds);

  return 0;
}


           
       

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