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integral program messing up
Hi so I have a program that is approximating the area under a given function's curve. I'm trying to make it so that it passes through command line statements.
When I try to run the program, it runs very weirdly, for example:
**code continued on next post
When I try to run the program, it runs very weirdly, for example:
./ass4 -f 1 -m 1 -a -1 -b 0 -n 30 The approximate area under the curve is: 0 The approximate area under the curve is: 0 The approximate area under the curve is: 0 The approximate area under the curve is: -145 |
#include <iostream>
#include <cmath>
#include <cstdlib>
#include <cstring>
using namespace std;
//prototypes for all separate functions
int chooseFunc(int, double, double, double, double);
int shape(int, double, double, double, double);
int numShapes(int, double, double, double, double);
int startPoint(int, double, double, double, double);
int endPoint(int, double, double, double, double);
double chooseMNgo1(int, double, double, double, double);
double chooseMNgo2(int, double, double, double, double);
double chooseMNgo3(int, double, double, double, double);
double chooseMNgo4(int, double, double, double, double);
double chooseMNgo5(int, double, double, double, double);
double func1_r(int, double, double, double, double);
double func2_r(int, double, double, double, double);
double func3_r(int, double, double, double, double);
double func4_r(int, double, double, double, double);
double func5_r(int, double, double, double, double);
double func1_t(int, double, double, double, double);
double func2_t(int, double, double, double, double);
double func3_t(int, double, double, double, double);
double func4_t(int, double, double, double, double);
double func5_t(int, double, double, double, double);
//calls all the functions
int main(int argc, char *argv[]){
double choose, start, end, number;
int choose2;
if(argc==11){
for(int i = 1; i < argc; i += 2){
if(argv[i][0] == '-' && argv[i][1]=='f')
choose = atoi(argv[i+1]);
else if(argv[i][0] == '-' && argv[i][1]=='n')
number = atoi(argv[i+1]);
else if(argv[i][0] == '-' && argv[i][1]=='a')
start = atoi(argv[i+1]);
else if(argv[i][0] == '-' && argv[i][1]=='b')
end = atoi(argv[i+1]);
else if(argv[i][0] == '-' && argv[i][1]=='m')
choose2 = atoi(argv[i+1]);
else {
cout << "ERROR!!!" << endl;
break;}
chooseFunc(choose, number, choose2, start, end);/*
start = startPoint(choose, number, choose2, start, end);
end = endPoint(choose, number, choose2, start, end);
choose2 = shape(choose, number, choose2, start, end);
number = numShapes(choose, number, choose2, start, end);*/
}
return 0;
}
}
//asks user which function they want to use
int chooseFunc(int choose2, double number, double choose, double start, double end){
//cout<<"Choose a function (1,2,3,4, or 5): "<<endl;
//cin>>choose;
/*cout << endl << "Choose" << choose << endl << "Choose2" << choose2 << endl << "Number" << number << endl << "Start" << start << endl << "End" << end << endl <<endl;*/
if (choose == 1)
chooseMNgo1(choose, number, choose2, start, end);
else if (choose == 2)
chooseMNgo2(choose, number, choose2, start, end);
else if (choose == 3)
chooseMNgo3(choose, number, choose2, start, end);
else if (choose == 4)
chooseMNgo4(choose, number, choose2, start, end);
else if (choose == 5){
chooseMNgo5(choose, number, choose2, start, end);}
}
int shape(int choose2, double end, double choose, double start, double number){
return choose2;
}
int numShapes(int choose2, double number, double choose, double start, double end){
return number;
}
double chooseMNgo1(int choose2, double end, double choose, double start, double number){
//cout << "What method would you like to use? Press 1 to use rectangles, 2 to use trapezoids or 3 to use both." << endl;
//cin >> choose2;
/*()start = startPoint(start, end, number, choose, choose2);
end = endPoint(start, end, number, choose, choose2);*/
if (choose2 == 1){
func1_r(start, end, number, choose, choose2);}
else if (choose2 == 3){
func1_r(start, end, number, choose, choose2);
func1_t(start, end, number, choose, choose2);}
else if ( choose2 == 2){
func1_t(start, end, number, choose, choose2);}
}
double chooseMNgo2(int choose2, double end, double choose, double start, double number){
//cout << "What method would you like to use? Press 1 to use rectangles, 2 to use trapezoids or 3 to use both." <<endl;
//cin >> choose2;
//start = startPoint(start, end, number, choose, choose2);
//end = endPoint(start, end, number, choose, choose2);
cout << "here";
if (choose2 == 1){
func2_r(start, end, number, choose, choose2);}
else if (choose2 == 3){
func2_t(start, end, number, choose, choose2);
func2_r(start, end, number, choose, choose2);}
else if (choose2 == 2){
func2_t(start, end, number, choose, choose2);}
}
double chooseMNgo3(int choose2, double end, double choose, double start, double number){
//cout << "What method would you like to use? Press 1 to use rectangles, 2 to use trapezoids or 3 to use both." <<endl;
//cin >> choose2;
//start = startPoint(choose, choose2, start, end, number);
//end = endPoint(choose, choose2, start, end, number);
if (choose2 == 1){
func3_r(start, end, choose, choose2, number);}
else if (choose2 == 3){
func3_r(start, end, choose, choose2, number);
func3_t(start, end, choose, choose2, number);}
else if(choose2 == 2){
func3_t(start, end, choose, choose2, number);}
}
double chooseMNgo4(int choose2, double end, double choose, double start, double number){
//cout << "What method would you like to use? Press 1 to use rectangles, 2 to use trapezoids or 3 to use both." <<endl;
//cin >> choose2;
//start = startPoint(start, end, choose, choose2, number);
//end = endPoint(start, end, choose, choose2, number);
if (choose2 == 1){
func4_r(start, end, choose, choose2, number);}
else if(choose2 == 3){
func4_r(start, end, choose, choose2, number);
func4_t(start, end, choose, choose2, number);}
else if(choose2 == 2){
func4_t(start, end, choose, choose2, number);}
}
double chooseMNgo5(int choose2, double end, double choose, double start, double number){
//cout << "What method would you like to use? Press 1 to use rectangles, 2 to use trapezoids or 3 to use both." <<endl;
//cin >> choose2;
//start = startPoint(start, end, choose, choose2, number);
//end = endPoint(start, end, choose, choose2, number);
if (choose2 == 1){
func5_r(start, end, choose, choose2, number);}
else if(choose2 == 3){
func5_r(start, end, choose, choose2, number);
func5_t(start, end, choose, choose2, number);}
else if(choose2 == 2){
func5_t(start, end, choose, choose2, number);}
}
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**code continued on next post
Last edited on
int startPoint(int choose2, double end, double start, double number, double choose)
{
//cout << "Please give a starting value. " << endl;
//cin >> start;
return start;
}
int endPoint(int choose2, double start, double end, double number, double choose)
{
//cout << "Please give an ending value. " << endl;
//cin >> end;
return end;
}
double func1_r(int choose2, double end, double choose, double start, double number){
float change, total = 0, i;
//cout << "Finally, indicate how many rectangles you would like to use." <<endl;
//cin >> rect;
change = (end-start)/number;
for(i = start; i < end; i += change)
total += change*(2*pow(i,5)+pow(i,3)-10*i+2);
cout << "The approximate area under the curve is: " << total << endl;
return total;
}
double func1_t(int choose2, double end, double choose, double start, double number){
float change, total = 0, i;
//cout << "Finally, indicate how many trapezoids you would like to use." <<endl;
//cin >> trap;
cout << "here";
change = (start-end)/number;
for (i = start; i < end; i+= change)
total += (change * ((2*pow(i,5)+pow(i,3)- 10*i + 2)+(2*pow(i + change, 5)+pow(i + change, 3)-(i + change)*10 +2)))/2;
cout << "The approximate area under the curve is: " << total << endl;
return total;
}
double func2_r(int choose2, double end, double choose, double start, double number){
float change, total = 0, i;
//cout << "Finally, indicate the amount of rectangles you would like to use. " <<endl;
//cin >> rect;
change = (start-end)/number;
for (i = start; i < end; i += change)
total += (6 * pow(i,2) - i + 10) * change;
cout << "The approximate area under the curve is: " << total << endl;
return total;
}
double func2_t(int choose2, double end, double choose, double start, double number){
float change, total = 0, i;
//cout << "Finally, indicate the amount of trapezoids you would like to use. "<< endl;
//cin >> trap;
change = (start-end)/number;
for (i = start; i < end; i += change)
total += (change*(( 6 * pow(i,2)- i + 10)+(6*pow(i + change, 2)-(i+ change) +10)))/2;
cout << "The approximate area under the curve is: " << total << endl;
return total;
}
double func3_r(int choose2, double end, double choose, double start, double number){
float change, total = 0, i;
//cout << "Finally, indicate the amount of rectangles you would like to use. " << endl;
//cin >> rect;
change = (end - start)/number;
for (i = start; i < end; i += change)
total += (change * (5 * i + 3));
cout << "The approximate area under the curve is: " << total << endl;
return total;
}
double func3_t(int choose2, double end, double choose, double start, double number){
//cout << "Finally, indicate the amount of trapezoids you would like to use. " << endl;
float change, total = 0, i;
//cin >> trap;
change = (end - start)/number;
for (i = start; i < end; i += change)
total += (((5*i+3)+(5*(i + change)+3))* change)/2;
cout << "The approximate area under the curve is: " << total << endl;
return total;
}
double func4_r(int choose2, double end, double choose, double start, double number){
//cout << "Finally, indicate the amount of rectangles you would like to use. " << endl;
float change, i, total = 0;
//cin >> rect;
change = (end - start)/number;
for (i = start; i < end; i += change)
total += ((2 * pow(i,3) + 120) * change);
cout << "The approximate area under the curve is: " << total << endl;
return total;
}
double func4_t(int choose2, double end, double choose, double start, double number){
//cout << "Finally, indicate the amount of trapezoids you would like to use. " << endl;
float change, i, total = 0;
//cin >> trap;
change = (end - start)/number;
for (i = start; i < end; i += change)
total += (change * ((2*pow(i,3)+ 120) + (2*pow(i+change,3)+ 120)))/2;
cout << "The approximate area under the curve is: " << total << endl;
return total;
}
double func5_r(int choose2, double end, double choose, double start, double number){
float change, i, total = 0;
//cout << "Finally, indicate the amount of rectangles you would like to use. " << endl;
//cin >> rect;
change = (end - start)/number;
for (i = start; i < end; i += change)
total += change * (2*pow(i,2));
cout << "The approximate area under the curve is: " << total << endl;
return total;
}
double func5_t(int choose2, double end, double choose, double start, double number){
float change, i, total = 0;
//cout << "Finally, indicate the amount of trapezoids you would like to use. " << endl;
//cin >> trap;
change = (end - start)/number;
for (i = start; i < end; i += change)
total += (change * ((2 * pow(i,2)) + (2 * pow(i+change,2))))/2;
cout << "The approximate area under the curve is: " << total << endl;
return total;
}
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This is possibly the worst written piece of code I have ever seen :O
I highly recommend learning the basics of program design, and just starting over from scratch with this.
I highly recommend learning the basics of program design, and just starting over from scratch with this.
Yea I commented a lot of unfinished ideas out because I was unsure of whether or not I would need it later but was testing to see if it would run properly.
Also yea I know I'm pretty terrible I'm still learning everything.
Also yea I know I'm pretty terrible I'm still learning everything.
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