Thread: Please Help me with this (if) code

I am practising the if code and decided to do a converter of different units of different types. It is not finished yet but I am running into a problem, when I select 2 then 9, 10, 11,12 it always starts with 8. It reads off 8 then goes 9... Help will be appreciated. Here is the code ...

Code:

#include <stdio.h>
#include <conio.h>
int main(void)
{
  int Type_of_conversion;
  float fahrenheit;
  float celsius;
  int f_or_c;
  printf("Temperature......................1\n\n");
  printf("Mass.............................2\n\n");
  printf("Type The Corresponding Number To Select The Type of Conversion: ");
  scanf("%d" ,&Type_of_conversion);
  if (Type_of_conversion ==1)
    {
    printf("\n");
    printf("Fahrenheit to Celsius.......1\n");
    printf("Celsius to Fahrenheit.......2\n");
    printf("\n");
    printf("Type the corresponding number for the unit of conversion: ");
    scanf("%d" ,&f_or_c);
    if (f_or_c == 1) {
        printf("Enter the Temperature in Fahrenheit:  ");
        scanf("%f" ,&fahrenheit);
        celsius = (fahrenheit-32)*(5.0/9.0);
        printf("%f degrees celsius", celsius);
    }
    if (f_or_c == 2) {
        printf("Enter the Temperature in Celsius:  ");
        scanf("%f" ,&celsius);
        fahrenheit = celsius*(9.0/5.0) + 32;
        printf("%f degress fahrenheit", fahrenheit);
    }
   }
   if (Type_of_conversion ==2) {
    printf("                             \n");
    printf("Kilograms to Pounds.........1\n");
    printf("Pounds to Kilograms.........2\n");
    printf("Kilograms to Ounces.........3\n");
    printf("Ounces to Kilograms.........4\n");
    printf("Pounds to Ounces............5\n");
    printf("Ounces to Pounds............6\n");
    printf("Grams to Kilograms..........7\n");
    printf("Kilograms to Grams..........8\n");
    printf("Grams to Pounds.............9\n");
    printf("Pounds to Grams.............10\n");
    printf("Grams to Ounces.............11\n");
    printf("Ounces to Grams.............12\n");
    printf("                             \n");
    printf("Type the corresponding number for the unit of conversion: ");
    int type_of_mass;
    float kg;
    float pound;
    float grams;
    float ounce;
    scanf("%d" ,&type_of_mass);
    if (type_of_mass ==1){
        printf("Enter the mass in Kilograms: ");
        scanf("%f" ,&kg);
        pound = (kg*2.2);
        printf("%f Pounds" ,pound);
    }
    if (type_of_mass ==2) {
        printf("Enter the mass in Pounds: ");
        scanf("%f" ,&pound);
        kg = (pound*0.4535);
        printf("%f Kilograms" ,kg);
    }
    if (type_of_mass ==3) {
        printf("Enter the mass in Kilograms: ");
        scanf("%f" ,&kg);
        ounce = kg*35.274;
        printf("%f Ounces" ,ounce);
    }
    if (type_of_mass ==4){
        printf("Enter the mass in Ounces: ");
        scanf("%f" ,&ounce);
        kg = ounce*(1.0/35.274);
        printf("%f Kilograms" ,kg);
    }
    if (type_of_mass ==5) {
        printf("Enter the mass in Pounds: ");
        scanf("%f" ,&pound);
        ounce = pound*16;
        printf("%f Ounces" ,ounce);
    }
    if (type_of_mass ==6) {
        printf("Enter the mass in Ounces: ");
        scanf("%f" ,&ounce);
        pound  = ounce/16;
        printf("%f Pounds" ,pound);
    }
    if (type_of_mass ==7) {
        printf("Enter the mass in Grams: ");
        scanf("%f" ,&grams);
        kg = grams/1000;
        printf("%f Kilograms" ,kg);
    }
    if (type_of_mass ==8); {
        printf("Enter the mass in Kilograms: ");
        scanf("%f" ,&kg);
        grams = (kg*1000);
        printf("%f Grams" ,grams);
    }
    if (type_of_mass ==9) {
        printf("Enter the mass in Grams: ");
        scanf("%f" ,&grams);
        pound = grams*0.0022;
        printf("%f Pounds" ,pound);
    }
    if (type_of_mass ==10) {
        printf("Enter the mass in Pounds: ");
        scanf("%f" ,&pound);
        grams = pound/0.0022046;
        printf("%f Grams" ,grams);
    }
   }
  getchar();
  return 0;
}

thanks a lot grumpy appreciate it, also is there a way to restart the code after it ends.

do while loop... that way you can have a final menu item to exit the program

im a beginner, can u tell me where to place the code