Hi Forum,
First let me begin by stating I am a student and have read the proper posting procedure concerning students. I am a begginer learning with the Miracle C Work Bench. I know my code is probably doing everything the long way, and there are more proficient ways to write my program, but like I said, I am just learning this foreign language. I'll get there!! (smiling)
Here is my problem, In my code I am trying to both verify that a user has input a number and not a letter and then verify that the number input will fall between a given range.
I have the range completed, but I am now trying to insert a number/letter validation using isdigit. I have the program working if a user inputs a number, it goes through isdigit and enters all my if/else statements correctly: however, if I input a letter, this completely throws my program for a loop, and no matter what I have tried will not work. I do not know if this is because I am using float-point numbers or what. It seems that when a letter is input it gets assigned to my float variable and goes through the wrong side of my code (like it was a number) and I can not get the input letter to flow the right way from isdigit. Here are my variable declarations and the peice of my code where I am having trouble. I hope this is enough for some one to get me pointed in the right direction, I have been working on this all night. It is not due for another two weeks. (I am working ahead in my class work)
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#include<stdio.h> //Loads standard input/output library
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#include<ctype.h>
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main()
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{ //Begin main
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float fSalePrice=0.00; //Declare as a float
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float fDelMar = 7.25; //Declare as a float
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float fEncinitas=7.50; //Declare as a float
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float fLaJolla=7.75; //Declare as a float
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And here is my section were I have trouble with the isdigit:
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if (isdigit(fSalePrice)==0)
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{
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if(fSalePrice < 0.01 || fSalePrice > 1000000.00 )
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{
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printf("\n\n\nYou have entered an incorrect value.\n\n\n");
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printf("\nPlease enter a sale price between .01 and 1000000.00\n\n");
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printf("With out comma's, please enter the sale price of merchandice:$ ");
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scanf("%f",&fSalePrice);
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Here is were I am trying to get a letter input to default to else statement)
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else
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{
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printf("\n\nYou have entered a letter.\n\n");
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printf("Please enter a sale price between .01 and 1000000.00\n\n");
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}
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I hope this enough for someone to help steer me, as I do want to learn what to do. Any direction would be greatly appreciated!
