Find maximum value from 2 dimensional array & addition of all the values before the maximum value & multiply the all values after the maximum value

Question

Here is my code

#include<stdio.h>
void main() {
  int a[4][4] = { { 1, 2, 3, 4 }, { 5, 6, 7, 8 }, { 9, 15, 6, 5 },
      { 4, 3, 2, 1 } };

  int max = a[0][0];
  int mIndexF, mIndexE, addition = 0, multiplication = 1, i, j, status = 0, k,
      l;

  // this is for find out maximum value
  for (i = 0; i < 4; i++) {
    for (j = 0; j < 4; j++) {
      if (max < a[i][j]) {
        max = a[i][j];
        mIndexF = i;
        mIndexE = j;
      }
    }
  }

  for (k = 0; k < 4; k++) {
    for (l = 0; l < 4; l++) {
      if ((a[k][l] < max) && (status == 0)) {
        addition += a[k][l];
      } else {
        status++;
        if (a[k][l] != max) {
          multiplication *= a[k][l];
        }
      }
    }
  }

  printf("Addition is %d\n", addition);
  printf("Multiplication is %d", multiplication);
  return 0;
}

I want to find the maximum value. Also want to print addition of the values which are in before of the maximum value and want to print multiply value of the values which are in after the maximum value.

Answer 1

The following should do the trick:

#define MAX_INT (((unsigned int)(-1))>>1)
#define MIN_INT (~(MAX_INT))

void minmax(int a[4][4])
{
    int i, j, maxi=0, maxj=0, max=MIN_INT, sum=0, mul=1;
    // this is for find out maximum value
    for (i = 0; i < 4; i++) {
        for (j = 0; j < 4; j++) {
            if (max < a[i][j]) {
                max = a[i][j];
                maxi = i;
                maxj = j;
            }
        }
    }
    // this is to add and multiply
    for (i = 0; i < 4; i++) {
        for (j = 0; j < 4; j++) {
            if (i< maxi || (i==maxi && j<maxj)) // this is "before" 
                 sum += a[i][j];
            else if (i==maxi && j==maxj)        // this is "same" 
                 ;                              //..nothing to do
            else mul *= a[i][j];
        }
    }
    printf("i,j=%d,%d; sum= %d, mul= %d\n", maxi, maxj, sum, mul);
}

EDIT: Added definitions of MAX_INT and MIN_INT

Answer 2

Your code seems to be correct: just initialize

max=INT_MIN using include<limits.h>

Your second loops seems to slight inappropriate you could use:

for(i=0;i<4;i++)
for(j=0;j<4;j++)
{
    if(status==0)
        add+=disp[i][j];
    else if(status==1)
        mul*=disp[i][j];
    if(i==loc_i && j==loc_j)
        status=1;

}

Afterwards just subtract

add-=disp[mIndexF][mIndexE];

Answer 3

    #include<stdio.h>
    void main(){

    int a[4][4]={
    {10,11,12,13},
    {14,15,16,17},
    {18,19,20,21},
    {22,2,3,3}
    };

    int max = a[0][0],mIndexF,mIndexE,addition = 0,multiplication =    1,i,j,status=0,k,l;

    // this is for find out maximum value
    for(i=0;i<4;i++){
    for(j=0;j<4;j++){
    if(max<a[i][j]){
    max = a[i][j];
    mIndexF=i;
    mIndexE=j;
    }
    }
    }

    printf("The maximum value is %d\n", max);

    for(k=0;k<4;k++){
    for(l=0;l<4;l++){
    if((a[k][l]<max) &&(status==0)){
    addition+=a[k][l];
    }else{
    status++;
    if(a[k][l]!=max){
    multiplication*=a[k][l];
    }
    }
    }
    }

    printf("Addition is %d\n",addition);
    printf("Multiplication is %d",multiplication);
    return 0;
    }