qsort: Sort 1 Dimension of 3D array in C -


i have 3d array: float input[2][50][1000];

i want quick sort from: 

qsort (x, sizeof(x)/sizeof(*x), sizeof(*x), comp);

where comp is

int comp (const void * elem1, const void * elem2) {     float f = *((float*)elem1);     float s = *((float*)elem2);     if (f > s) return  1;     if (f < s) return -1;     return 0; }

i want sort 1 dimension of 3d array, i.e want sort input[0][temp][0], input[0][temp][1], input[0][temp][2] , on.

ques: replace x with? forgive me if sounds stupid

float (*x)[1000] = &input[0][temp]; qsort (x, sizeof(*x)/sizeof(**x), sizeof(**x), comp);

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