I dette eksempel lærer du at finde det største nummer blandt de tre tal, der er indtastet af brugeren.
For at forstå dette eksempel skal du have kendskab til følgende C-programmeringsemner:
- C Programmeringsoperatører
- C hvis… ellers Erklæring
Eksempel 1: Brug af if-erklæring
#include int main() ( double n1, n2, n3; printf("Enter three different numbers: "); scanf("%lf %lf %lf", &n1, &n2, &n3); // if n1 is greater than both n2 and n3, n1 is the largest if (n1>= n2 && n1>= n3) printf("%.2f is the largest number.", n1); // if n2 is greater than both n1 and n3, n2 is the largest if (n2>= n1 && n2>= n3) printf("%.2f is the largest number.", n2); // if n3 is greater than both n1 and n2, n3 is the largest if (n3>= n1 && n3>= n2) printf("%.2f is the largest number.", n3); return 0; )
Eksempel 2: Brug af hvis … ellers Ladder
#include int main() ( double n1, n2, n3; printf("Enter three numbers: "); scanf("%lf %lf %lf", &n1, &n2, &n3); // if n1 is greater than both n2 and n3, n1 is the largest if (n1>= n2 && n1>= n3) printf("%.2lf is the largest number.", n1); // if n2 is greater than both n1 and n3, n2 is the largest else if (n2>= n1 && n2>= n3) printf("%.2lf is the largest number.", n2); // if both above conditions are false, n3 is the largest else printf("%.2lf is the largest number.", n3); return 0; )
Eksempel 3: Brug af Nestet hvis … ellers
#include int main() ( double n1, n2, n3; printf("Enter three numbers: "); scanf("%lf %lf %lf", &n1, &n2, &n3); if (n1>= n2) ( if (n1>= n3) printf("%.2lf is the largest number.", n1); else printf("%.2lf is the largest number.", n3); ) else ( if (n2>= n3) printf("%.2lf is the largest number.", n2); else printf("%.2lf is the largest number.", n3); ) return 0; )
Outputtet fra alle disse programmer ovenfor vil være det samme.
Indtast tre tal: -4,5 3,9 5,6 5,60 er det største tal.
