Kristina_1.3.2

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

int main() {
    float a = 0;
    float b = 0;
    float h = 0;
    printf("Enter a = ");
    if(scanf("%f", &a) != 1)
    {
        printf("Error.\n");
        return 0;
    }
    printf("Enter b = ");
    if(scanf("%f", &b) != 1)
    {
        printf("Error.\n");
        return 0;
    }
    printf("Enter h = ");
    if(scanf("%f", &h) != 1)
    {
        printf("Error.\n");
        return 0;
    }
    if(a > b || h <= 0)
    {
        printf("Input Error.");
        return 0;
    }
    printf("x\ty(x)\n");
    printf("%f\n", cos(a));
    float o = a+h;
    while(o <= b)
    {
        printf("%f\t%f\n", o, cos(o));
        o = o + h;
    }

    return 0;
}