c program to find mean median and mode

/****************************************************** * File : program-to-find-mean-median-mode.c * Author : Saurabh Gupta * Desc : computed mean, mode and median * Source : http://saurabhgupta0527.blogspot.com/ * Created : AM 09:55 15 September 2011 * Note : *****************************************************/ #include <stdio.h> #define MAX_ELEMENTS_LIMIT 100 /* * function signatures */ float computeMean (float[],int); float computeMedian (float[],int); float computeMode (float[],int); int main() { printf ("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"); printf ("XXXXX Mean / Mode / Median calculator XXXXX\n"); printf ("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"); /* * variable declaration's */ int i, nTotalNumbers, nUserChoice; float anUserElements[MAX_ELEMENTS_LIMIT], nMean, nMedian, nMode; /* * take number of elements */ printf("Enter No of Elements\n"); scanf("%d", &nTotalNumbers); /* * store user input numbers */ printf("Enter Elements\n"); for(i=0; i<nTotalNumbers; i++) { scanf("%f",&anUserElements[i]); } do { printf("\n\tEnter Choice\n\t1.Mean\n\t2.Median\n\t3.Mode\n\t4.Exit\n"); scanf("%d",&nUserChoice); switch(nUserChoice) { case 1: nMean = computeMean(anUserElements,nTotalNumbers); printf("\n\tMean = %f\n",nMean); break; case 2: nMedian = computeMedian(anUserElements,nTotalNumbers); printf("\n\tMedian = %f\n",nMedian); break; case 3: nMode=computeMode(anUserElements,nTotalNumbers); printf("\n\tMode = %f\n",nMode); break; case 4: break; default:printf("No Matching Option Found\n"); break; } } while(nUserChoice!=4); printf ("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"); return 0; } /*************************************************************** Function Name : computeMean Purpose : find nMean Return Value : Mean Return Type : float ***************************************************************/ float computeMean(float anUserElements[],int nTotalNumbers) { int i; float sum=0; for(i=0; i<nTotalNumbers; i++) { sum = sum + anUserElements[i]; } return (sum/nTotalNumbers); } /*************************************************************** Function Name : computeMedian Purpose : find Median Return Value : Median Return Type : Float ***************************************************************/ float computeMedian(float a[],int nTotalNumbers) { float temp; int i,j; for(i=0; i<nTotalNumbers; i++) { for(j=i+1; j<nTotalNumbers; j++) { if(a[i]>a[j]) { temp=a[j]; a[j]=a[i]; a[i]=temp; } } } if(nTotalNumbers%2==0) { return (a[nTotalNumbers/2]+a[nTotalNumbers/2-1])/2; } else { return a[nTotalNumbers/2]; } } /*************************************************************** Function Name : computeMode Purpose : find Mode Return Value : Mode Return Type : Float ***************************************************************/ float computeMode(float a[],int nTotalNumbers) { return (3*computeMedian(a,nTotalNumbers)-2*computeMean(a,nTotalNumbers)); } /* * OUTPUT * [sgupta@rhel54x64 c]$ gcc program-to-find-nMean-nMedian-nMode.c -o program-to-find-nMean-nMedian-nMode [sgupta@rhel54x64 c]$ ./program-to-find-nMean-nMedian-nMode XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXX nMean / nMode / nMedian calculator XXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Enter No of Elements 5 Enter Elements 1 2 3 4 5 Enter Choice 1.Mean 2.Median 3.Mode 4.Exit 1 Mean = 3.000000 Enter Choice 1.Mean 2.Median 3.Mode 4.Exit 2 Median = 3.000000 Enter Choice 1.Mean 2.Median 3.Mode 4.Exit 3 Mode = 3.000000 Enter Choice 1.Mean 2.Median 3.Mode 4.Exit 4 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX */ See also
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