Year 2019 Makeup
- Write a function that accepts two integers as arguments and returns average of even numbers between them.
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#include<stdio.h> int avg(int a, int b) { int avg = 0, sum = 0, count = 0, min = a<b?a:b, max = a>b?a:b; for( int i = min ; i <= max ; i++ ) { if(i%2==0) { sum+=i; count++; } } avg = sum/count; return avg; } void main() { int a,b; printf("Enter two numbers:\n"); scanf("%d%d",&a,&b); printf("Average of even numbers between them: %d.",avg(a,b)); } |
- Write a program to read a file named ‘some.txt’ which contains 20 words and display only ten words in the monitor.
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#include<stdio.h> void main() { FILE *fp = fopen("some.txt","r"); if(fp){ printf("Reading contents of the file...\n"); printf("Displaying the ten words from the file:\n"); int count = 0,c; while((c = fgetc(fp)) != EOF) { if(c == ' ' || c == '\n' || c == '\t') { printf("\n"); ++count; } else { printf("%c", c); } if(count == 10) break; } } else printf("Error reading file."); fclose(fp); } |
- Write a program to take 11 records of car (model, price, color, cc) from user and display the records of red cars only.
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#include<stdio.h> #include<string.h> struct car{ char model[20]; int price; char color[10]; int cc; }; void main() { struct car C[11]; int i; for(i=0;i<11;i++) { printf("\nEnter %dth car details :\n",i+1); printf("\nEnter car model: "); scanf("%s", C[i].model); printf("\nEnter car price: "); scanf("%d", &C[i].price); printf("\nEnter car color: "); scanf("%s", C[i].color); printf("\nEnter car cc: "); scanf("%d", &C[i].cc); } printf("\n\nDetails of red cars:\n"); char color[10]; for(i=0;i<11;i++) { strcpy(color,C[i].color); //use this to simply prevent change in the original data i.e ReD may be changed to red. define color. if(strcmp(strlwr(color),"red")==0) { printf("\n\n%dth car details: ",i+1); printf("\nModel: %s.",C[i].model); printf("\nPrice: %d.",C[i].price); printf("\nColor: %s.",C[i].color); printf("\nCC: %d.",C[i].cc); } } } |
- Write a function which accepts two integers as arguments and returns sum, difference, and product of the numbers.
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#include<stdio.h> typedef struct operations{ int sum; int difference; int product; }operations; operations action(int a, int b) { operations O; O.sum = a + b; O.difference = a - b; O.product = a * b; return O; } void main() { int a,b; printf("Enter two numbers:\n"); scanf("%d%d",&a,&b); operations O = action(a,b); printf("Sum : %d.\nDifference : %d.\nProduct : %d.",O.sum,O.difference,O.product); } |
- Write a program that takes integers in an array of size 3 by 3, and display sum of all the elements in the array.
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#include<stdio.h> void main() { int a[3][3]; int i, j, sum = 0; printf("Enter the elements of the array:\n"); for( i = 0 ; i < 3 ; i++ ) { for( j = 0 ; j < 3 ; j++ ) { printf("Enter [%d][%d] element: ",i,j); scanf("%d",&a[i][j]); sum+=a[i][j]; } } printf("The sum of all the elements in the array is: %d.",sum); } |
- Write a program to display the following pattern:
a
b b
c c c
e e e e
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#include<stdio.h> void main() { char a = 'a'; int i,j; for(i=1;i<=4;i++) { for(j=1;j<=i;j++) { printf("%c\t",a); } a = a + 1; if(a=='d') a = 'e'; printf("\n"); } } |