unkown behaviour

[krishna]

when i am running this code it is giving different behaviur with scanf("%c",&op) as mentioned in this code

#include<stdio.h>
#include<conio.h>
int main(void)
{

	int a,b;
	char op;
	
	printf("Enter the number a and b");
	scanf("%d\n%d",&a,&b);
    printf("Enter the opetration + or - ");
	scanf("\n%c",&op); //it is working in this way
//	scanf("%c",&op);  //not working with this statement
	switch(op)
	{
	case '+': 
		printf("Sum of the number=%d",a+b);
		break;
	case '-': 
		printf("Diff of the number=%d ",a-b);
		break;
	default:
		  printf("Wrong operation");
	}
	getch();
	
}

[matsp]

The newline in your format string for scanf tells scanf "skip any whitespace" [you could use a space in the same place"]. If you don't do that, it will accept the newline entered when terminating the 2 numbers [unless you know what the program will do and enter "2 3+" when it asks for the numbers, instead of when it asks for the operator].

--
Mats

[krishna]

thanks matsp