Data can be entered & displayed in a particular format. Through format specifications, better presentation of results can be obtained

Variations in Output for integer & floats:

#include int main() { printf("Case 1:%6d\n",9876); /* Prints the number right justified within 6 columns */ printf("Case 2:%3d\n",9876); /* Prints the number to be right justified to 3 columns but, there are 4 digits so number is not right justified */ printf("Case 3:%.2f\n",987.6543); /* Prints the number rounded to two decimal places */ printf("Case 4:%.f\n",987.6543); /* Prints the number rounded to 0 decimal place, i.e, rounded to integer */ printf("Case 5:%e\n",987.6543); /* Prints the number in exponential notation (scientific notation) */ return 0; } Output Case 1: 9876 Case 2:9876 Case 3:987.65 Case 4:988 Case 5:9.876543e+002

Variations in Input for integer and floats:

#include int main() { int a,b; float c,d; printf("Enter two intgers: "); /*Two integers can be taken from user at once as below*/ scanf("%d%d",&a,&b); printf("Enter intger and floating point numbers: "); /*Integer and floating point number can be taken at once from user as below*/ scanf("%d%f",&a,&c); return 0; }

Similarly, any number of inputs can be taken at once from user.