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  • 1 Post By Matticus

using scanf() to read a character from standard input

This is a discussion on using scanf() to read a character from standard input within the C Programming forums, part of the General Programming Boards category; so running the following code Code: #include <stdio.h> int main(void) { char c; int i=1; while (scanf("%c", &c)==1) printf("loop sequence ...

  1. #1
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    Join Date
    Oct 2013
    Posts
    17

    using scanf() to read a character from standard input

    so running the following code

    Code:
    #include <stdio.h>
    
    int main(void) {
            char c;
            int i=1;
    
    
            while (scanf("%c", &c)==1)
                    printf("loop sequence %i: %c(%i)\n", i++, c, (int)c);
            printf("\ndone\n");
    
    
            return 0;
    }
    would produce something like this

    Code:
    1
    loop sequence 1: 1(49)
    loop sequence 2:
    (10)
    2
    loop sequence 3: 2(50)
    loop sequence 4:
    (10)
    a
    loop sequence 5: a(97)
    loop sequence 6:
    (10)
    b
    loop sequence 7: b(98)
    loop sequence 8:
    (10)
    
    
    done
    it seems a "carriage return" serves two purposes here, one is to signal the program to read in the character typed in before the "carriage return", another serves as a second character typed, how can i do this cleanly, that is without having to use a "carriage return" as the second character to signal "i've typed in the first character already"

  2. #2
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    Jun 2011
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    brassbin likes this.

  3. #3
    Registered User
    Join Date
    Oct 2013
    Posts
    17
    Thank you!

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