Problem with input

[smoky spear]

#include <stdio.h>
int sum(int a, int b)

{
return a + b;
}
int main()
{
int a, b, c;

printf("Enter your first number");
scanf("%d\n", &a);

printf("Enter your second number");
scanf("%d\n", &b);

c = sum(a, b);
printf("The sum is %d\n", c);

return 0;

}

// When I run this code, int b doesnt execute until i type int a two times . And then it adds both of those int a but not a and b. why is that? pls help

[fallow sparrow]

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[cloud edge]

get rid of the \n in the scanf format

that's only neccesary for printf, since scanf formatters other than %c and %[ will skip leading whitespace automatically

[smoky spear]

Thank you @cloud edge.

[fallow sparrow]

Thank you and let us know if you have any more questions!

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[smoky spear]

#include <stdio.h>
void printstar(int n)
{
int i;
for (i = 0; i < n; i++)
{
printf("%c", "*");
}
}
int main()
{
int n;
printf("How many stars do you want to print?\n");
scanf("%d", &n);
printstar(n);
return 0;
}

What am i doing wrong here?

[fallow sparrow]

✅

[smoky spear]

I want to print "stars" as many times as the user gives input for. I'm calling the function and asking it to print the stars "n" times but it just wont work

[cloud edge]

images aren't working right now, you're gonna have to describe what "doesn't work" means

[smoky spear]

In function 'printstar':
Func.c:27:10: error: 'i' undeclared (first use in this function)
for (i = 0; i < n; i++)
^
Func.c:27:10: note: each undeclared identifier is reported only once for each function it appears in

[Done] exited with code=1 in 0.093 seconds

the error message

[cloud edge]

did you press save

[smoky spear]

i did

[cloud edge]

you're using %c on a char*/string variable

[smoky spear]

can you edit the code and tell me what shoudl i change pls?

[cloud edge]

handing you a solution doesn't help you

Your formatters and variable types need to match - %s is for strings, %c is for single characters

[smoky spear]

so do i use %s?

[cloud edge]

What do you think?

[smoky spear]

i think there's something wrong with my loop. That tutorial guy used %c but my %c isnt working

[cloud edge]

"" is for string literals. use '' for a single char

[smoky spear]

oh wow