Question

when i run this, it ends after user input of weight and height, what am i doing wrong?

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

//function main begins program execution
int main ()
{
float weightCal = 0.0; // weight of the person
float heightCal = 0.0; // height of the person
float bmiCal = 0.0; // user's BMI

// get user's height
printf("Please enter your height (in inches):");
scanf( "%f", &heightCal);

// get user's weight
printf("Please enter your weight (in pounds): " );
scanf( "%f", weightCal );

bmiCal = weightCal * 703 / ( heightCal * heightCal ); // calculate BMI

printf( "\nYour BMI is %.1f.\n\n", bmiCal ); // output BMI to one floating point value

// output data to user
puts( "** BMI VALUES **********************************" );
puts( "**\t\t\t\t\t\t**" );
puts( "**\tUnderweight:\tless than 18.5\t\t**" );
puts( "**\tNormal:\t\tbetween 18.5 and 24.9\t**" );
puts( "**\tOverweight:\tbetween 25 and 29.9\t**" );
puts( "**\tObese:\t\t30 or greater\t\t**" );
puts( "**************************************************\n" );

system ("pause");
return 0;

} // end main

Answer 1

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

//function main begins program execution
int main ()
{
float weightCal = 0.0; // weight of the person
float heightCal = 0.0; // height of the person
float bmiCal = 0.0; // user's BMI

// get user's height
printf("Please enter your height (in inches):");
scanf( "%f", &heightCal);

// get user's weight
printf("Please enter your weight (in pounds): " );
scanf( "%f", &weightCal );

bmiCal = weightCal * 703 / ( heightCal * heightCal ); // calculate BMI

printf( "\nYour BMI is %.1f.\n\n", bmiCal ); // output BMI to one floating point value

// output data to user
puts( "** BMI VALUES **********************************" );
puts( "**\t\t\t\t\t\t**" );
puts( "**\tUnderweight:\tless than 18.5\t\t**" );
puts( "**\tNormal:\t\tbetween 18.5 and 24.9\t**" );
puts( "**\tOverweight:\tbetween 25 and 29.9\t**" );
puts( "**\tObese:\t\t30 or greater\t\t**" );
puts( "**************************************************\n" );

system ("pause");
return 0;

} // end main

Note: You missed & before weightCal