CSC373/406: Example: Functions [4/8]

• A function in C is like a static method in Java, except there is no container class
• A function may also have a prototype that allows the function to be used before it is defined.

file:square.c [source]

00001: #include <stdio.h> 00002: // prototypes 00003: int square(int numb); 00004: int main() 00005: { 00006: int val = 3; 00007: int sq_val; 00008: 00009: sq_val = square(val); 00010: 00011: printf("val = %d; sq_val = %d\n", val, sq_val); 00012: 00013: return 0; 00014: } 00015: 00016: int square(int numb) 00017: { 00018: return numb*numb; 00019: } 00020: 00021: