#include <stdio.h>
#include <math.h>
 
int main(void) {
    float b;
//    printf("Eneter a float number");
    printf("Enter a float number"); // Corrected typo
    fflush(stdout); // Send the buffer to the console so the user can see it
    int a=0;
//    a=5; -- Not required
    a=scanf("%f", &b); // See the manual page for reading floats
    if (a==0) // Need comparison operator not assignemnt
    {
        printf("scanf error: (%d)\n",a); // A better error message could be placed here
    }
    else
    {
    	printf("%g\n", b); // Just to check the input with ideone - debugging
        printf("%g %g %g",floor(b), round(b), ceil(b));
    }
    return 0; // You need the semi-colon here
}

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NC42NTc=

4.657