CODEWITHSUNDEEP
c
user133174
user133174

Reputation: 89

How can I select given data in array?

int substance[5]={0.15, 0.8, 35.3, 401, 46};

printf("Please select the substance: (1)Oak (2)Glass (3)Lead (4)Copper (5)Steel)");
scanf("lf%", substance[0])

In the array, I have the data for different material,

I want the user to type 1-5 and select one of the material. say, user select 2, the the following calculation will use number 0.8

Upvotes: 0

Views: 71

Answers (1)

Stephan Lechner
Stephan Lechner

Reputation: 35154

There are some issues.

First, your substance-array should contain double-values, so its type should be double, too (not int). Second, if you ask the user for input, store the input in a separate variable (not in the substance-array). Try the following and use a debugger to see how a program behaves:

double substance[5]={0.15, 0.8, 35.3, 401, 46};

printf("Please select the substance: (1)Oak (2)Glass (3)Lead (4)Copper (5)Steel)");
int position=-1;
scanf("%d", &position);
double actualSubstance = -1;
if (position > 0 && position <= 5) {
  actualSubstance = substance[position-1];
}
// actualSubstance will contain the selected substance, or -1 if an invalid selection has been taken

Upvotes: 3

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