84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
#include <gtk/gtk.h>
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#include "calc.h"
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/*
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Tesses Calculator a PEMDAS calculator (with mod)
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Copyright (C) 2023 Mike Nolan
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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GtkWidget* number;
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void truncatezeros(char* c)
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{
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size_t pos = strlen(c) - 1;
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while(pos >= 0 && c[pos] == '0' )
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{
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c[pos] = 0;
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pos--;
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if(pos >= 0 && c[pos] == '.')
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{
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c[pos] = 0;
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}
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}
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}
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void calculate_answer(GtkWidget* calculate,gpointer data)
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{
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const char* text= gtk_entry_get_text(GTK_ENTRY(number));
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bool error=false;
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double val=calc(text,&error);
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char myNumber[1000];
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if(error)
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{
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snprintf(myNumber,1000,"error");
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}
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else
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{
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snprintf(myNumber,1000,"%f",val);
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truncatezeros(myNumber);
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}
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gtk_entry_set_text(GTK_ENTRY(number),myNumber);
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}
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int
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main (int argc,
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char **argv)
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{
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GtkWidget* window;
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GtkWidget* grid;
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GtkWidget* calculate;
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gtk_init(&argc,&argv);
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window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
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g_signal_connect(window,"destroy",G_CALLBACK(gtk_main_quit),NULL);
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grid = gtk_grid_new();
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gtk_container_add(GTK_CONTAINER(window),grid);
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number = gtk_entry_new();
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gtk_grid_attach(GTK_GRID(grid),number,0,0,1,1);
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calculate = gtk_button_new_with_label("Calculate");
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gtk_widget_set_hexpand (calculate, TRUE);
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gtk_widget_set_halign (calculate, GTK_ALIGN_CENTER);
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g_signal_connect(calculate,"clicked",G_CALLBACK(calculate_answer),NULL);
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gtk_grid_attach(GTK_GRID(grid),calculate,0,1,1,1);
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gtk_window_set_title(GTK_WINDOW(window),"Tesses Calculator");
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gtk_window_set_default_size(GTK_WINDOW(window),320,-1);
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gtk_widget_show_all(window);
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gtk_main();
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return 0;
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}
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