If i add scanf in this function i got strucked .

Akash Poovan Do this int shoe_size; scanf("%d", &shoe_size);

Akash Poovan maybe you're doing something wrong it's working fine here with scanf(). #include<stdio.h> int main() { int shoe_size; scanf("%d",&shoe_size); if (shoe_size<=9) printf ("welcome"); else printf("oops"); }

Characters mentioned in scanf must be seen in the input. int h,m;scanf("%d:%d",&h,&m); Expects: 3:4

Thank you so much for your kind answers i found the mistake , that i wrote code like this [ scanf ("you shoe size%d",&shoe_size);] now i realised that nothing should be write inside a scanf.

AJ ANAT your very smart👏

I think it's not an irony! ;)