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The maximum value of a list represented as an array from 0 to n-1 (where n is not zero) is the value in the list that is not smaller than any other value. The position of that value (or values) is not important here. Note: When there are no elements in the array, the maximum value is usually taken to be either not defined (null, void, etc.) or negative infinity (the most negative value that can be represented for that type).

Here is an array initialized as an array literal.
int values[4] = { 82 , 70 , 67 , 94};
The array values has elements from 0 to 3 and is a a shortened form of the following.
int values[4]; values[0] = 82; values[1] = 70; values[2] = 67; values[3] = 94;
Note: A better way is to use a constant, but literals are used here as an example.

Here is an example using a literal array and a while loop.

Here is the C code.
#include <stdio.h> int main() { int values[4] = { 82 , 70 , 67 , 94}; int max = values[0]; int i = 1; while (i < 4) { if (values[i] > max) { max = values[i]; } i += 1; } printf("max=%d\n",max); return 0; }
Note: There is no need to check the element at position 0 so the loop starts at position 1. Here is the output of the C code.
max=94

Here is an example using a literal array and a for loop.

Here is the C code.
#include <stdio.h> int main() { int values[4] = { 82 , 70 , 67 , 94}; int max = values[0]; for (int i=1; i < 4; i++) { if (values[i] > max) { max = values[i]; } } printf("max=%d\n",max); return 0; }
Here is the output of the C code.
max=94

Here is the same code using labels and the goto statement. (For advanced classes only; do not use the goto in the CS101 class).

Here is the C code.
#include <stdio.h> int main() { int values[4] = { 82 , 70 , 67 , 94}; int max = values[0]; int i = 1; L10: if (! (i < 4)) goto L20; if (! (values[i] > max)) goto L30; max = values[i]; L30: i++; goto L10; L20: printf("max=%d\n",max); return 0; }
Note that, by convention, labels are placed at the left (ignoring indent rules) and if statements that are conditional goto statements are written on one line. Here is the output of the C code.
max=94

A much better way to write the above program, using constant abstraction and a more consistent naming convention is as follows.

Here is the C code.
#include <stdio.h> int main() { const int DATAMAX1 = 4; // C requires literal size for constant array literal int dataArray1[4] = { 82 , 70 , 67 , 94 }; int dataMax1 = dataArray1[0]; for (int dataPos1=1; dataPos1 < DATAMAX1; dataPos1++) { if (dataArray1[dataPos1] > dataMax1 ) { dataMax1 = dataArray1[dataPos1]; } } printf("max=%d\n",dataMax1); return 0; }
Here is the output of the C code.
max=94