Lab46 Wiki

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======scanf() input======

<code c 1>
#include <stdio.h>
#include <stdlib.h>

int main()
{
    int a, *b;
    short int c;
    char d;
    float e;
    
    b = (int *) malloc (sizeof(int) * 1);
    
    fprintf(stdout, "Enter an integer: ");
    fscanf(stdin, "%u", &a);
    
    fprintf(stdout, "Enter another integer: ");
    fscanf(stdin, "%u", b); // why don't we need & in this case?
    
    fprintf(stdout, "Enter a short int: ");
    fscanf(stdin, "%hu", &c);
    
    fprintf(stdout, "Enter a char: ");
    fscanf(stdin, "%c", &d);
    
    fprintf(stdout, "Enter a float value: ");
    fscanf(stdin, "%f", &e);
    
    fprintf("Your ints are: %u and %u\n", a, *b);
    fprintf("Your short int is: %hu\n", c);
    fprintf("Your char is: '%c'\n", d);
    fprintf("Your float (trimmed at 2 decimal places) is: %.2f\n", e);
    
    return(0);
}
</code>

=====Questions=====
  * Why doesn't the input of **b** in **fscanf()** need a preceding **&**?
  * Does the program work properly?
    * If not, what seems to be going wrong?
    * How would you figure out where the problem seems to be manifesting?
    * How could you make it right?

=====Hints=====
  * Try moving the last **fprintf()** earlier in the list of final **fprintf()**'s. Does this make a difference? If so, WHY?