New to programming, Segmentation Fault?

[dc210]

I've been trying to look elsewhere online, but the code I see is all very complicated compared to my knowledge level. I'm trying to create a program that does exactly this and I keep getting a "Segmentation fault" error after it asks for the two integers.

Please enter two integers: -1 3

Description Data
----------- ----
Input 1 -1
Input 2 3
Sum 2
Half of Input 1 -0.5
Half of Input 2 1.5
Quotient 0


Here's my code as it is currently, I know it's messed up, but I literally started last week and my teacher isn't helping. What all is causing this segmentation fault?

#include <stdio.h>

int main (void)
{
// create a and b variables aka local declarations
   int a;
   int b;
   int Sum;
   int Half_of_Input_1;
   int Half_of_Input_2;
   int Quotient;

// statements
   printf("\nName: Herp Derp\n");

   printf("\nPlease enter two integers:\n");
   scanf("%d %d, &a, &b");
   scanf("%d %d %d %d, &Sum, &Half_of_Input_1, &Half_of_Input_2, &Quotient");
//inputting of data

Sum = a + b;
Half_of_Input_1 = a / 2;
Half_of_Input_2 = b / 2;
Quotient = a / b;

// chart data
   printf("%20c%20c", "Description Data");
   printf("%20c%20c", "___________ ____");
   printf("%20c%20d", "Input 1", a);
   printf("%20c%20d", "Input 2", b);
   printf("%20c%20d", "Sum", Sum);
   printf("%20c%19.1f", "Half of Input 1", Half_of_Input_1);
   printf("%20c%19.1f", "Half of Input 2", Half_of_Input_2);
   printf("%20c%20d", "Quotient", Quotient);

return 0;
}

[rags_to_riches]

Compiling with warnings turned up:

new.c:17: warning: too few arguments for format
new.c:18: warning: too few arguments for format
new.c:27: warning: format ‘%20c’ expects type ‘int’, but argument 2 has type ‘char *’
new.c:27: warning: too few arguments for format
new.c:28: warning: format ‘%20c’ expects type ‘int’, but argument 2 has type ‘char *’
new.c:28: warning: too few arguments for format
new.c:29: warning: format ‘%20c’ expects type ‘int’, but argument 2 has type ‘char *’
new.c:30: warning: format ‘%20c’ expects type ‘int’, but argument 2 has type ‘char *’
new.c:31: warning: format ‘%20c’ expects type ‘int’, but argument 2 has type ‘char *’
new.c:32: warning: format ‘%20c’ expects type ‘int’, but argument 2 has type ‘char *’
new.c:32: warning: format ‘%19.1f’ expects type ‘double’, but argument 3 has type ‘int’
new.c:33: warning: format ‘%20c’ expects type ‘int’, but argument 2 has type ‘char *’
new.c:33: warning: format ‘%19.1f’ expects type ‘double’, but argument 3 has type ‘int’
new.c:34: warning: format ‘%20c’ expects type ‘int’, but argument 2 has type ‘char *’

scanf is used like this:

scanf("%d", &intVar);

[brack]

Green -> correct
Red -> wrong

#include <stdio.h>
int main (void){
// create a and b variables aka local declarations
   int a;
   int b;
   int Sum;
   int Half_of_Input_1;
   int Half_of_Input_2;
   int Quotient;

// statements
   printf("\nName: Herp Derp\n");

   printf("\nPlease enter two integers:\n");
   scanf("%d %d", &a, &b");
   scanf("%d %d %d %d", &Sum, &Half_of_Input_1, &Half_of_Input_2, &Quotient");
//inputting of data

Sum = a + b;
Half_of_Input_1 = a / 2;
Half_of_Input_2 = b / 2;
Quotient = a / b;

// chart data
   printf("%20c%20c", "Description Data");
   printf("%20c%20c", "___________ ____");
   printf("%20c%20d", "Input 1", a);
   printf("%20c%20d", "Input 2", b);
   printf("%20c%20d", "Sum", Sum);
   printf("%20c%19.1f", "Half of Input 1", Half_of_Input_1);
   printf("%20c%19.1f", "Half of Input 2", Half_of_Input_2);
   printf("%20c%20d", "Quotient", Quotient);

return 0;
}

try this:

#include <stdio.h>

int main (void)
{
// create a and b variables aka local declarations
   int a;
   int b;
   int Sum;
   int Half_of_Input_1;
   int Half_of_Input_2;
   int Quotient;

// statements
   printf("\nName: Herp Derp\n");

   printf("\nPlease enter two integers:\n");
   scanf("%d %d", &a, &b);
   scanf("%d %d %d %d", &Sum, &Half_of_Input_1, &Half_of_Input_2, &Quotient);
//inputting of data

Sum = a + b;
Half_of_Input_1 = a / 2;
Half_of_Input_2 = b / 2;
Quotient = a / b;

// chart data
   printf("%20s", "Description Data");
   printf("%20s", "___________ ____");
   printf("%20s %20d", "Input 1", a);
   printf("%20s %20d", "Input 2", b);
   printf("%20s %20d", "Sum", Sum);
   printf("%20s %19.1d", "Half of Input 1", Half_of_Input_1);
   printf("%20s %19.1d", "Half of Input 2", Half_of_Input_2);
   printf("%20s %20d", "Quotient", Quotient);

return 0;
}

[dc210]

Thank you very much for the help guys. It's running properly, but it's misaligned a lot. I don't really know how to do field width properly yet.