This is the code I have so far. It works well until you try and input a value fo

Question

This is the code I have so far. It works well until you try and input a value for the first variable. It returns segmentation error.

#include <stdio.h>

#include <stdlib.h>

int main (int argc, char **argv) {

  char input01;

  char input02;

  double Volt;

  double Res;

  double Current;

  char V;

  char I;

  char R;

printf("Current Calculator ");

  printf("         ");

  printf("Enter the first unit type (V, R, I): ");

  scanf("%c", input01);

  getchar();

  if (input01 == V)

    {printf("Enter the voltage: ");

     scanf("%lf", Volt);}

  if (input01 == R)

    {printf("Enter the resistance: ");

     scanf("%lf", Res);}

  if (input01 == I)

    {printf("Enter the current: ");

     scanf("%lf", Current);}

printf("Enter the second unit type (V, R, I): ");

  scanf("%c ", input02);

  getchar();

  if (input01 == V)

    {printf("Enter the voltage: ");

     scanf("%lf", Volt);}

  if (input01 == R)

    {printf("Enter the resistance: ");

     scanf("%lf", Res);}

  if (input01 == I)

    {printf("Enter the current: ");

     scanf("%lf", Current);}

if (input01 == V && input02 == R)

    {Current = Volt/Res;

    printf("The corresponding current is %f amps. ", Current);}

  if (input01 == V && input02 == I)

    {Res = Volt/Current;

    printf("The corresponding resistance is %f Ohms. ", Res);}

  if (input01 == R && input02 == V)

    {Current = Volt/Res;

    printf("The corresponding current is %f amps. ", Current);}

  if (input01 == R && input02 == I)

    {Volt = Current * Res;

    printf("The corresponding voltage is %f volts. ", Volt);}

  if (input01 == I && input02 == R)

    {Volt = Current * Res;

    printf("The corresponding voltage is %f volts. ", Volt);}

  if (input01 == I && input02 == V)

    {Res = Volt/Current;

    printf("The corresponding resistance is %f Ohms. ", Res);}

return 0;

}

Explanation / Answer

#include <stdio.h>

int main()

{

int option;

float V, I, R, result;   

printf( "Press 1 to calculate the electric current; press 2 to calculate the resistance; press 3 to calculate the voltage " );

scanf( "%d", &option );   

if( option == 1 ){

printf( "Enter the voltage in volts: " );

scanf( "%f", &V );

printf( "Enter the resistance in ohms: " );

scanf( "%f", &R );

result = V / R;

printf( "The current is %0.2f amps", &result );

}   

else if( option == 2 ){

printf( "Enter the voltage in volts: " );

scanf( "%f", &V );   

printf( "Enter the current in amps: " );

scanf( "%f", &I );   

result = V / I;   

printf( "The resistance is %0.2f ohms.", &result );

}   

else if( option == 3 ){

printf( "Enter the resistance in ohms: " );

scanf( "%f", &R );

printf( "Enter the current in amps: " );

scanf( "%f", &I );   

result = I * R;   

printf( "The voltage is %0.2f volts", &result );

}   

getch();

return 0;

}

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.