need help returning float values from subprograms

This is a discussion on need help returning float values from subprograms within the C Programming forums, part of the General Programming Boards category; it seems i can only return an integer value from a subprogram? i need a float value returned is there ...

  1. #1
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    need help returning float values from subprograms

    it seems i can only return an integer value from a subprogram? i need a float value returned is there something i'm missing here? i wrote this quick block of code to show you what i mean. say i type in 6.67 in the get_z function it then returns to the main function and assigns it to z. when i print z in the main function it prints as 6.0000 etc

    Code:
    #include <stdio.h>
    #include <stdlib.h>
    
    int main()
    {
      float z;
      
          z=get_z();
          printf("z in main fuction = %f\n", z);
          
          system("PAUSE");
          return 0;
    }
    
    
    int get_z()
    {
      float z;
          
          printf("please enter # for z: ");
          scanf("%f", &z);
          
          return z;
    }

  2. #2
    ZuK
    ZuK is offline
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    define get_z() to return a float
    Code:
    float get_z();
    Kurt

  3. #3
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    now it just returns a value of 1.000 no matter what number i enter... any idea why?

  4. #4
    ZuK
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    Post your code.
    Kurt

  5. #5
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    its the same thing but just with the float get_z as opposed to the int get_z... i'm really confused as to why its not working

    Code:
    #include <stdio.h>
    #include <stdlib.h>
    
    int main()
    {
      float z;
      
          z=get_z();
          printf("z in main fuction = %f\n", z);
          
          system("PAUSE");
          return 0;
    }
    
    
    float get_z()
    {
      float z;
          
          printf("please enter # for z: ");
          scanf("%f", &z);
          
          return z;
    }

  6. #6
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    what compiler are you using? you need to turn up your warning levels.
    Code:
    #include <stdio.h>
    #include <stdlib.h>
    
    float get_z();
    
    int main()
    {
      float z;
      
          z=get_z();
          printf("z in main fuction = %f\n", z);
          
          system("sleep 2");
          return 0;
    }
    
    
    float get_z()
    {
      float z;
          
          printf("please enter # for z: ");
          scanf("%f", &z);
          
          return z;
    }

  7. #7
    ZuK
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    Put
    Code:
    float get_z();
    before main.
    As your code is right now it should not even compile. ( redifinition of function with different returntype )
    Kurt

  8. #8
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    Quote Originally Posted by ZuK View Post
    Put
    Code:
    float get_z();
    before main.
    As your code is right now it should not even compile. ( redifinition of function with different returntype )
    Kurt
    thanks man, i tried to declare the fuctions before hand but forgot the ";" after it so i got a ton of errors and just got rid of it. anyway it works now. thanks

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