Problem with scanf [duplicate]

This question already has answers here: Closed 12 years ago.

Possible Duplicate:

Simple C scanf does not work?

Why does scanf("%c", &letter); not working. the rest is working

#inc开发者_运维技巧lude <stdio.h>

main(){
    int number;
    float number1;
    char letter;
    char letter2 [5];

    printf("Enter an int: ");
    scanf("%d", &number);
    printf("Enter a float: ");
    scanf("%f", &number1);
    printf("Enter a letter: ");
    scanf("%c", &letter);
    printf("Enter a string: ");
    scanf("%s", letter2);

    printf("INT = %d\n", number);
    printf("FLOAT = %f\n", number1);
    printf("LETTER = %c\n", letter);
    printf("LETTER2= %s\n", letter2);

    getch();
}

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This is because the newline (return key) after feeding float is counted as a character.

This is not a bug but it is due to fact that "\n" is considered a character in C and if you have to ignore it, you need to do that manually.

The simplest solution for your case is to eat up the newline as follows:

scanf("%f", &number1);
getchar();

This Link will help.

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scanf reads the whitespace that is left in the buffer from the previous line. To skip the whitespace, add a space to the scanf:

scanf(" %c", &letter);

The space means "skip whitespace" and the the %c means "read the following character.