C/C++ struct example

structexample.c

#include "stdio.h"                                                                
#include "stdlib.h"

typedef double real;

struct SolverParams
{
        real dt;
        real tolh;
        real end_time;
};

void print(struct SolverParams* solver_params)
{
        printf("dt=%f tolh=%f end_time=%f\n",
                        solver_params->dt,
                        solver_params->tolh,
                        solver_params->end_time);
}

int main()
{
        struct SolverParams solver_params =
        {
                .dt = 0.1,
                .tolh = 1e-6,
                .end_time = 10.0
        };

        print(&solver_params);

        return EXIT_SUCCESS;
}

structexample.cpp

#include <cstdio>
#include <cstdlib>                                                                

typedef double real;

typedef struct SolverParams
{
    real dt;
    real tolh;
    real end_time;
} SolverParams;

void print(SolverParams& solver_params)
{
    printf("dt=%f tolh=%f end_time=%f\n",
            solver_params.dt,
            solver_params.tolh,
            solver_params.end_time);
}

int main()
{
    SolverParams solver_params =
    {
        .dt = 0.1,
        .tolh = 1e-6,
        .end_time = 10.0
    };

    print(solver_params);

    return EXIT_SUCCESS;
}