29.2(працює)

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

double f(double a, double b,double c)
{
    return fabs(a+b)*(2.0 + cos(c)*cos(c)/(a+b))/exp(a-b);
}
int main(void)
{
    double a,b,c;
    printf("Input A\n");
    scanf_s("%lf", &a);
    printf("Input B\n");
    scanf_s("%lf", &b);
    printf("Input G\n");
    scanf_s("%lf", &c);
    printf("%g\n",a);
    printf("%g\n",b);
    printf("%g\n",c);
    double y = f(a,b,c);
    printf("Y = %g",y);
    return 0;
}