[ilham92-cc-sakura]

Like in C,

#include <stdio.h>
void main(){
     float a=65.4;
     printf("number is %d = %c", (int)a, (char)a);
}

how to cast/convert data type in Source Mod?

[h3bus]

new a = 100;
new Float b;

b = Float:a;
a = _:b;

[berni]

Afaik casting is actually not possible because there is no automatic data conversion in Sourcepawn.
All you can do is, to "tag" a variable into another datatype. For float / cell (int) conversion you actually have to use the proper functions if you don't want to end with garbish data.

PHP Code:

// Float to cell
new integer = RoundToCeil(5.3); // Conversion to int and tag change by function
// 4 rounding functions exist: RoundToZero, RoundToCeil, RoundToFloor, RoundToNearest

// Cell to float
new Float:floating = float(5);  // Conversion to int and tag change by function

// Hardcode a new tag (-type)
new Handle:tagChange = Handle:5; // This would tag a number as handle (This is just an example, you shouldn't actually do this).