Printf and scanf return values :

scanf retuns no of inputs taken according to format specifier.

e.g. :

int a,b,c;

c=scanf(“%d%d”,&a,&b);

Explanation :

if a=100 and b=200 then returned value to c will be 2. or if you give input value as character than corresponding  input count will be added as zero. if you give a as input character ‘d’ and and b as input 200 then returned value to c will be 1.

 

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printf returns no of characters printed on screen.

c=printf(“Coding Street”);

Then value of c will be 13.

c=printf(“%d %d”,a,b);

if a=200 and b=300 then printed value on screen is ‘200 300’ so assigned value to c will be 7.