Uhuegbulem Chinonso 
18/SCI01/093
QUESTION 1
#include <stdio.h> AKUKWE MICHAEL LOTACHUKWU
18/SCI01/014
QUESTION 1
#include <stdio.h>
int main(){
   int y;
printf("enter the year:\n");
scanf("%d",&y);
 
  if (y % 4==0)​
      printf("this is a leap year :%d",y);
  else if (y % 100== 0)
       printf("this is not a leap year :%d",y);
   else if (y % 400 == 0)
       printf("this is a leap year:%d",y);
  else
   printf("this is not a leap year ");
 return 0 ;
}
QUESTION 2
#include <stdio.h>
int main (){
 int a,b,c;
 printf("enter the first number\n");
 scanf("%d",&a);
 printf(" enter the second number\n");
 scanf("%d",&b);
 printf("enter the third number\n");
 scanf("%d",&c);
    if (a>b&&a>c){
      printf(" the biggest number is :%d",a);
    }
    else if (b>a&&b>c){
       printf("the biggest number is :%d",b);
    }
    else {
           printf("the biggest number is :%d",c);
    }
 
       }
 
QUESTION 3
#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 int main() {
       char str[100], ch;
       int i, grade[7];
       float credit[7], gpa = 0.0, totCredit = 0.0;
       printf("Letter Grade and Credits for each subject:\n");
       for (i = 0; i < 7; i++) {
               printf("Subject %d(Grade|Credit):", i + 1);
               ch = getchar();
               grade[i] = ch;
               scanf("%f", &credit[i]);
               getchar();
       }
 
       /* print the input grades and credits */
       printf("\nSubject | Grade | Credit\n");
       for (i = 0; i < 7; i++) {
               printf("   %d    |  %c    | %.0f\n", i + 1, grade[i], credit[i]);
       }
 
       /* calculate gpa value */
       for (i = 0; i < 7; i++) {
               switch (grade[i]) {
                       case 'A':
                               gpa = gpa + 5 * credit[i];
                               totCredit = totCredit + credit[i];
                               break;
                       case 'B':
                               gpa = gpa + 4 * credit[i];
                               totCredit = totCredit + credit[i];
                               break;
 
                       case 'C':
                               gpa = gpa + 3 * credit[i];
                               totCredit = totCredit + credit[i];
                               break;
 
                       case 'D':
                               gpa = gpa + 2 * credit[i];
                               totCredit = totCredit + credit[i];
                               break;
 
                       case 'E':
                               gpa = gpa + 1 * credit[i];
                               totCredit = totCredit + credit[i];
                               break;
 
                       case 'F':
                               gpa = gpa + 0 * credit[i];
                               totCredit = totCredit + credit[i];
                               break;
 
                       default:
                               printf("Given Wrong grade!!\n");
                               exit(0);
 
               }
       }
       printf("GPA: %f\tcredit: %f\n", gpa, totCredit);
       gpa = gpa / totCredit;
       printf("GPA for your score: %.2f\n", gpa);
       return 0;
 }
int main(){
   int y;
printf("enter the year:\n");
scanf("%d",&y);
 
  if (y % 4==0)​
      printf("this is a leap year :%d",y);
  else if (y % 100== 0)
       printf("this is not a leap year :%d",y);
   else if (y % 400 == 0)
       printf("this is a leap year:%d",y);
  else
   printf("this is not a leap year ");
 return 0 ;
}
QUESTION 2
#include <stdio.h>
int main (){
 int a,b,c;
 printf("enter the first number\n");
 scanf("%d",&a);
 printf(" enter the second number\n");
 scanf("%d",&b);
 printf("enter the third number\n");
 scanf("%d",&c);
    if (a>b&&a>c){
      printf(" the biggest number is :%d",a);
    }
    else if (b>a&&b>c){
       printf("the biggest number is :%d",b);
    }
    else {
           printf("the biggest number is :%d",c);
    }
 
       }
 
QUESTION 3
#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 int main() {
       char str[100], ch;
       int i, grade[7];
       float credit[7], gpa = 0.0, totCredit = 0.0;
       printf("Letter Grade and Credits for each subject:\n");
       for (i = 0; i < 7; i++) {
               printf("Subject %d(Grade|Credit):", i + 1);
               ch = getchar();
               grade[i] = ch;
               scanf("%f", &credit[i]);
               getchar();
       }
 
       /* print the input grades and credits */
       printf("\nSubject | Grade | Credit\n");
       for (i = 0; i < 7; i++) {
               printf("   %d    |  %c    | %.0f\n", i + 1, grade[i], credit[i]);
       }
 
       /* calculate gpa value */
       for (i = 0; i < 7; i++) {
               switch (grade[i]) {
                       case 'A':
                               gpa = gpa + 5 * credit[i];
                               totCredit = totCredit + credit[i];
                               break;
                       case 'B':
                               gpa = gpa + 4 * credit[i];
                               totCredit = totCredit + credit[i];
                               break;
 
                       case 'C':
                               gpa = gpa + 3 * credit[i];
                               totCredit = totCredit + credit[i];
                               break;
 
                       case 'D':
                               gpa = gpa + 2 * credit[i];
                               totCredit = totCredit + credit[i];
                               break;
 
                       case 'E':
                               gpa = gpa + 1 * credit[i];
                               totCredit = totCredit + credit[i];
                               break;
 
                       case 'F':
                               gpa = gpa + 0 * credit[i];
                               totCredit = totCredit + credit[i];
                               break;
 
                       default:
                               printf("Given Wrong grade!!\n");
                               exit(0);
 
               }
       }
       printf("GPA: %f\tcredit: %f\n", gpa, totCredit);
       gpa = gpa / totCredit;
       printf("GPA for your score: %.2f\n", gpa);
       return 0;
 }