I was supposed to do this exercise: Write a program in C to print a frequency chart on the screen. Input and output: The program receives as input a sequence of triples (number, frequency, character). For each sequence it should print a slash, producing a graph as in the example below.
Example For input
(5,12, -) (4,17, -) (2,1, -) (1,19, +)
the program should print
5 | ------------ 12
4 | ----------------- 17
2 | -
1 | +++++++++++++++++++ 19
I realize that if I put a space before the sentence in the scanf function, it works very well, but the program desdon't end when it was expected
int main()
{
int x, b, i, u;
char n;
do{
u = scanf(" (%d,%d,%c)", &x, &b, &n);
printf("%d |", x);
for (i = 0; i < b; i++){
printf("%c", n);
}
printf(" %d\n", b);
}while(u == 3);
}
It was expected that, when the scanf don't read the 3 things it was supposed to, the while loop ends and the program is finished. But, when it happens, he still waiting for a new input. How do I fix that?
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